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Familial Hypertriglyceridemia

On July 28, 2026

When Fat in the Blood Runs in the Family

Most people know they should keep an eye on their cholesterol. But triglycerides — another type of fat circulating in the blood — often fly under the radar. For some families, though, high triglycerides aren’t just a lifestyle problem. They’re baked into the DNA. Familial hypertriglyceridemia (FHTG) is a hereditary condition in which the liver chronically overproduces fat-carrying particles, sending triglyceride levels well above what diet alone can fully explain. It’s more common than most people realize and is frequently under diagnosed. If left unaddressed it can trigger serious complications including pancreatitis and heart disease.

One of my earliest disappointments as a young physician was a patient with familial hypertriglyceridemia. He was in his late 20s and his triglycerides were running in the critical level. We tried multiple interventions and he was referred to multiple specialists. Unfortunately, he wasn’t able to make the lifestyle changes he needed to make and progressively got worse and worse before passing away in his mid-30s. Fortunately, we have better treatments now, but this still is potentially a dangerous disease.

This article walks through FHTG, what it is, what causes it, how it presents, how it’s diagnosed, and what modern medicine can actually do about it.

What Is Familial Hypertriglyceridemia?

Triglycerides are the most common form of fat in the body. After you eat, calories that your body doesn’t immediately need are converted into triglycerides and stored in fat cells. Between meals, hormones release these fats for energy. When this system gets stuck in the “on” position — or when the body doesn’t clear triglycerides efficiently — blood levels climb.

FHTG, technically classified as Type IV familial dyslipidemia, is a genetic disorder in which the liver overproduces very low-density lipoprotein (VLDL) particles — essentially the trucks that carry triglycerides through the bloodstream. The result is persistently elevated triglyceride levels, typically in the moderate-to-severe range, sometimes severe enough to become medically dangerous.

Normal fasting triglycerides are generally below 150 mg/dL. Borderline high falls between 150 and 199. In FHTG, levels often run 200–500 mg/dL or higher, and some patients can exceed 1,000 mg/dL, a threshold at which the risk of acute pancreatitis rises sharply.

Etiology: The Genetic Story Is More Complicated Than Expected

For decades, FHTG was described in textbooks as a straightforward autosomal dominant disorder — meaning one copy of a faulty gene was enough to cause the condition, and each child of an affected parent had a 50% chance of inheriting it. That picture has been substantially revised by modern genetics.

It turns out that FHTG is primarily polygenic — driven not by a single dramatic mutation but by the cumulative effect of many small genetic variants. Studies have now identified more than 300 independent genetic locations associated with plasma triglyceride levels. No single gene tells the whole story. Instead, a person inherits a kind of genetic “load” that creates susceptibility — and whether that susceptibility becomes clinically apparent often depends on environmental triggers.

The genes involved all play a role in how the body metabolizes fat-carrying particles. Heterozygous (single-copy) variants in these genes are common in most FHTG patients. The much rarer and more severe familial chylomicronemia syndrome (FCS) both copies are defective producing extreme triglyceride elevations and a very different clinical picture.

Environmental factors that worsen FHTG include obesity, poorly controlled diabetes, alcohol use, a diet heavy in refined carbohydrates and sugars, estrogen-containing medications, and certain drugs such as corticosteroids and beta-blockers. In many patients, the genetic predisposition only becomes clinically obvious when one or more of these environmental triggers is present — which explains why the condition often goes undetected until adulthood.

Symptoms: The Quiet Condition

One of FHTG’s most deceptive features is that it is often silent. Many people carry the condition for years without a single symptom, discovering it only through routine blood work or a family history investigation. This is why widespread lipid screening is so important — FHTG doesn’t announce itself with chest pain or obvious physical signs, at least not initially.

When symptoms first appear, they are often subtle and tend to reflect either the degree of triglyceride elevation or the presence of associated conditions. In cases of moderate elevation, patients might experience vague fatigue, weight gain, or features of metabolic syndrome — high blood pressure, elevated blood sugar, increased waist circumference.

At higher triglyceride levels, more distinctive signs can emerge. Xanthomas, yellowish, waxy deposits of fat under the skin, may appear, particularly around the eyelids (xanthelasmas) or over the elbows, knees, or tendons. The liver may enlarge (hepatomegaly), reflecting fat accumulation. An eye exam may show lipemia retinalis — a milky or salmon-pink discoloration of the retinal blood vessels — visible with an ophthalmoscope when triglycerides are extremely high.

The most dangerous symptom is severe abdominal pain signaling acute pancreatitis. When triglycerides exceed 1,000 mg/dL, the pancreas can become inflamed as it is overwhelmed by fat-rich particles. This is a medical emergency. Nausea, vomiting, and upper abdominal pain radiating to the back are warning signs that warrant immediate evaluation.

There is also an increased risk of early cardiovascular disease in FHTG patients, particularly when metabolic syndrome is present, though the relationship between triglycerides alone and heart disease risk is more nuanced than it is with LDL cholesterol.

Diagnosis: Getting the Full Picture

Diagnosis begins with a standard fasting lipid panel — a blood test that measures total cholesterol, LDL, HDL, and triglycerides. In FHTG, the hallmark findings are elevated triglycerides and VLDL, often accompanied by low HDL (the so-called “good” cholesterol). LDL levels may be normal or even low, which can sometimes falsely reassure both patients and physicians.

Because many things can raise triglycerides — including a meal eaten before the blood draw, excess alcohol, diabetes, hypothyroidism, kidney disease, and certain medications — the first step is ruling out secondary causes. A thorough personal and family history is essential. A clinician who asks about triglycerides in parents or siblings or even children is doing exactly what the guidelines recommend.

The “familial” part of the diagnosis is confirmed when multiple first-degree relatives are found to have elevated triglycerides, when the elevation persists despite controlling for secondary causes, and when the pattern fits what we’d expect from a heritable condition appearing across generations.

Genetic testing can identify specific variants in the related genes, but it is not required for a clinical diagnosis and is not routinely performed. Genetic testing may be ordered when the clinical picture is severe or ambiguous, or when distinguishing FHTG from the rarer familial chylomicronemia syndrome which has treatment implications such as the emerging targeted therapies.

Current guidelines also recommend evaluating for cardiovascular risk in patients with mild-to-moderate FHTG, and for pancreatitis risk in those with severe elevations.

Treatment: A Layered Approach

Lifestyle First

The cornerstone of FHTG management — at least for mild-to-moderate disease — is lifestyle modification, and it can be remarkably effective. Cutting refined carbohydrates and added sugars is particularly powerful. Saturated fat primarily raises LDL cholesterol, but it is carbohydrates that drive hepatic triglyceride production. Alcohol is another major player. Even moderate consumption can substantially raise triglycerides in susceptible individuals, and abstinence often produces dramatic improvements.

Weight loss, regular aerobic exercise, and tight blood sugar control in patients with diabetes or prediabetes round out the lifestyle toolkit. Estrogen-containing contraceptives or hormone replacement therapy should be reconsidered in women with FHTG, as estrogen directly stimulates hepatic VLDL production and can push levels dangerously high.

Pharmacologic Options

When lifestyle changes aren’t enough, several drug classes are available. Fibrates (such as fenofibrate and gemfibrozil) are the most established triglyceride-lowering medications and can reduce levels by 30–50%. They work primarily by activating receptors that enhance triglyceride clearance.

Omega-3 fatty acids at prescription doses (2–4 grams per day) provide another option. High dose eicosapentaenoic acid (EPA), specifically the formulation icosapent ethyl (Vascepa), has demonstrated cardiovascular benefit in a major clinical trial in high-risk patients with elevated triglycerides who are already on statin therapy.

Niacin (nicotinic acid) was once widely used but has fallen out of favor after clinical trials failed to show cardiovascular benefit on top of statin therapy, despite its triglyceride-lowering ability. It is also poorly tolerated due to its side effect profile and patients frequently are noncompliant.

Statins are prescribed primarily to manage cardiovascular risk and LDL cholesterol rather than to lower triglycerides directly, though they have a modest effect on the latter.

Emerging Therapies

Perhaps the most exciting development in recent years is the arrival of RNA-based medications targeting apolipoprotein C-III (APOC3) — a protein that inhibits the clearance of triglyceride-rich particles. By silencing the gene that produces APOC3, these drugs can achieve dramatic reductions in triglyceride levels even in patients who don’t respond to conventional therapies.

Olezarsen received FDA approval in 2024 for patients with familial chylomicronemia syndrome. Its application in FHTG more broadly is an active area of clinical investigation. Similarly, drugs targeting angiopoietin-like proteins are under study, offering the prospect of precision medicine approaches to a condition that has long resisted fully effective treatment.

Prognosis: Manageable, But Not to Be Ignored

The prognosis for FHTG is generally favorable when the condition is identified and managed appropriately. Unlike some other inherited lipid disorders, FHTG is not automatically associated with dramatically elevated cardiovascular risk — particularly when LDL and HDL levels are otherwise reasonable. This distinguishes it from conditions like familial hypercholesterolemia, where premature heart disease is nearly inevitable without treatment.

That said, FHTG patients frequently carry additional cardiovascular risk factors as part of the metabolic syndrome package that must be addressed in its own right. The American Heart Association has noted that this clustering of risk factors likely elevates cardiovascular risk in FHTG patients beyond what triglycerides alone would predict.

The more immediate and measurable danger in FHTG is pancreatitis. When triglycerides are severely elevated, the risk of a potentially life-threatening inflammatory episode of the pancreas is real. Repeated bouts of pancreatitis can cause chronic damage, that impairs digestive function and increases the risk of pancreatic cancer. Preventing severe hypertriglyceridemia through consistent management — lifestyle, medication, or both — is not optional for high-risk patients.

With appropriate care, most patients with FHTG can expect to live a normal lifespan. The key predictors of outcome are compliance with dietary and lifestyle changes, appropriate use of medication when indicated, regular lipid monitoring, and attention to comorbidities like diabetes and hypertension. Family members of affected individuals also should be screened.

Bottom Line

Familial hypertriglyceridemia is one of those conditions that rewards attention and penalizes neglect. It runs quietly in families, often masked by other lifestyle factors until a crisis — a pancreatitis episode, an unexpected cardiovascular event — brings it to light. Modern genetics has revealed it to be more complex than once thought, driven by a mosaic of variants rather than a single defective gene. Treatment has evolved accordingly: from basic dietary counseling to sophisticated RNA-based drugs that target the fat metabolism pathway at the molecular level.

If you have a family history of high triglycerides, early heart disease, or pancreatitis of unclear cause, it’s worth having a conversation with your doctor about a fasting lipid panel and a careful family history review. Knowing is the first step to managing.

Medical Disclaimer

The information provided in this article is intended for general educational and informational purposes only and does not constitute medical advice. It should not be used as a substitute for professional medical advice, diagnosis, or treatment.

Always seek the guidance of a qualified healthcare provider with any questions you may have regarding a medical condition or treatment. Never disregard professional medical advice or delay seeking it because of something you have read here.

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

The author of this article is a licensed physician, but the views expressed here are solely those of the author and do not represent the official position of any hospital, health system, or medical organization with which the author may be affiliated.

Image generated by author using ChatGPT.

Sources

• MedlinePlus – Familial Hypertriglyceridemia

• NCBI StatPearls – Familial Hypertriglyceridemia (2024)

• Wikipedia – Familial Hypertriglyceridemia

• PMC – Genetics of Hypertriglyceridemia (Dron & Hegele, 2020)

• PMC – Understanding Hypertriglyceridemia: Integrating Genetic Insights (2024)

• PMC – Diagnosis and Treatment of Hypertriglyceridemia

• PMC – Severe Hypertriglyceridemia and Chylomicronemia Syndrome

• PMC – Pancreatic and Cardiometabolic Complications of Severe Hypertriglyceridemia (2024)

• Springer – The Genetic Basis of Hypertriglyceridemia

• Medscape – Hypertriglyceridemia: Background, Etiology, Pathophysiology

• PMC – Olezarsen for Familial Chylomicronemia Syndrome (2024-2025)

• Endocrine Society – Evaluation and Treatment of Hypertriglyceridemia (Clinical Practice Guideline)

• Cleveland Clinic – Hypertriglyceridemia: Causes, Risk Factors & Treatment

Eating Well for the Long Run: How Your Nutritional Needs Change as You Age

By John Turley

On July 20, 2026

In Medicine

Growing older is often described as a gradual process, but many of the body’s changes begin earlier than most people realize. By our thirties, we slowly begin to lose muscle mass. By our fifties and sixties, our metabolism slows, bones become more fragile, digestion changes, and our bodies become less efficient at absorbing certain nutrients. None of this means declining health is inevitable. In fact, one of the most powerful tools for maintaining strength, independence, and quality of life is something we do every day: eat.

The nutritional needs of older adults are different from those of younger adults—not because the body suddenly requires exotic foods or expensive supplements, but because it becomes less forgiving of nutritional shortfalls. While calorie requirements often decline as physical activity decreases and muscle mass diminishes, the need for high-quality nutrients remains the same or even increases. Nutritionists refer to this as the challenge of nutrient density: getting more nutrition from fewer calories.

The goal of eating well in later life is not simply to prevent disease. It is to preserve muscle, maintain cognitive function, support the immune system, protect the heart and bones, and help people remain active and independent for as long as possible.

Protein: The Cornerstone of Healthy Aging

Protein is perhaps the most important of all nutrients as we age. Beginning around age 30, adults lose approximately 3 to 8 percent of their muscle mass each decade. After age 60, the rate often accelerates. This gradual decline, known as sarcopenia, contributes to weakness, slower walking speed, impaired balance, increased risk of falls, and loss of independence. During illness or hospitalization, muscle can disappear surprisingly quickly, making recovery more difficult.

The problem is compounded by what scientists call anabolic resistance. Aging muscle simply does not respond to protein as efficiently as younger muscle. Older adults must consume more protein—and distribute it more evenly throughout the day—to stimulate muscle repair and growth.

The Recommended Dietary Allowance is 0.8 grams of protein per kilogram of body weight— that’s about 80 grams for a 160-pound adult. For reference, a 4 oz serving of salmon has about 22 grams of protein. Many geriatric nutrition experts recommend 1.0 to 1.2 grams per kilogram daily for healthy adults over age 65. Those recovering from surgery, injury, or serious illness may require1.2 to 1.5 grams per kilogram, but only under medical supervision.

Equally important is timing. Many Americans consume very little protein at breakfast, a modest amount at lunch, and most of it at dinner. Research suggests muscle responds better when approximately 25 to 30 grams of protein are consumed at each meal.

Excellent sources include fish, poultry, lean meat, eggs, Greek yogurt, cottage cheese, beans, lentils, tofu, soy products, nuts, and seeds. Dairy proteins such as whey are especially rich in leucine, an amino acid that plays a central role in stimulating muscle protein synthesis.

Nutrition alone, however, is only part of the equation. Resistance training—even with light weights or resistance bands—works hand in hand with adequate protein to preserve muscle throughout later life.

Carbohydrates: Choosing Quality Over Quantity

Carbohydrates have acquired an undeserved reputation in many popular diets. In reality, they remain the body’s preferred source of energy and are especially important for the brain, which relies heavily on glucose to function.

The key is not eliminating carbohydrates but selecting healthier ones.

As we age, our bodies often become less sensitive to insulin, making blood sugar regulation more challenging. Highly refined carbohydrates—white bread, pastries, sugary beverages, and many processed snack foods—cause rapid spikes in blood glucose followed by equally rapid declines. Over time, these fluctuations may contribute to weight gain, insulin resistance, and type 2 diabetes.

Complex carbohydrates digest more slowly, providing a steadier release of energy while supplying vitamins, minerals, and fiber. Whole grains such as oatmeal, barley, brown rice, and whole-wheat bread are excellent choices. Fruits, vegetables, beans, and lentils provide carbohydrates along with antioxidants and phytochemicals that support overall health.

Contrary to popular belief, potatoes are not inherently unhealthy. Preparation matters. A baked potato with its skin offers potassium, vitamin C, and fiber, whereas deep-fried potatoes or heavily buttered mashed potatoes provide considerably more calories and saturated fat.

Many older adults find that emphasizing minimally processed carbohydrates improves energy levels and helps maintain stable blood sugar throughout the day.

Fiber: The Unsung Hero

Fiber is one of the most overlooked nutrients in the American diet, yet it becomes increasingly important with age.

Digestive motility naturally slows as we grow older. Physical inactivity, inadequate fluid intake, and medications—including opioid pain relievers, some antidepressants, calcium supplements, and certain blood pressure medications—can further contribute to constipation.

Fiber helps keep the digestive system functioning normally by increasing stool bulk and promoting regular bowel movements. But its benefits extend well beyond the gastrointestinal tract.

A high-fiber diet lowers LDL (“bad”) cholesterol, slows glucose absorption, improves blood sugar control, supports healthy gut bacteria, and increases feelings of fullness, helping many people maintain a healthy weight.

Current recommendations suggest approximately 30 grams of fiber daily for older men and about 21 grams for older women, although most Americans consume substantially less.

Good sources include fresh fruits, vegetables, legumes, oats, bran cereals, nuts, seeds, and whole grains.

Fiber should always be increased gradually while maintaining adequate fluid intake. Without sufficient water, increasing fiber can actually worsen constipation.

Healthy Fats Continue to Matter

Fat remains an essential nutrient throughout life.

Healthy fats provide energy, help build cell membranes, assist in hormone production, reduce inflammation, and allow absorption of the fat-soluble vitamins A, D, E, and K.

Perhaps most importantly, healthy fats support cardiovascular health, an increasingly important consideration with advancing age.

Monounsaturated fats found in olive oil, avocados, almonds, pecans, pistachios, and peanuts remain among the healthiest dietary choices.

Particularly valuable are the marine omega-3 fatty acids EPA and DHA found in salmon, trout, sardines, herring, and mackerel. Numerous studies have shown that these fats lower triglyceride levels and are associated with improved cardiovascular health. Some research also suggests they may help preserve cognitive function, although evidence remains mixed.

Plant sources such as flaxseed, chia seeds, walnuts, and canola oil provide alpha-linolenic acid (ALA), another beneficial omega-3 fatty acid.

By contrast, trans fats should be avoided whenever possible, while saturated fats from fatty meats, butter, and highly processed foods are best consumed in moderation.

Hydration: The Forgotten Nutrient

Water is not technically a nutrient, yet it may be one of the most important components of healthy aging.

Older adults are especially vulnerable to dehydration for several reasons. The sensation of thirst becomes less reliable with age, kidney function changes, and many medications—including diuretics—promote fluid loss. Some older individuals intentionally drink less because of concerns about urinary urgency or nighttime trips to the bathroom.

Even mild dehydration can produce fatigue, headaches, dizziness, constipation, confusion, kidney stones, urinary tract infections, and an increased risk of falls.

Unlike younger adults, older people should not rely solely on thirst as a signal for their fluid needs.

Most healthy older adults benefit from drinking fluids consistently throughout the day. Water is the best choice, but milk, tea, coffee, soups, and water-rich foods such as melons, oranges, cucumbers, tomatoes, and berries all contribute to hydration.

The color of the urine offers a practical guide. Pale yellow generally indicates adequate hydration, whereas dark yellow urine often suggests that additional fluids are needed, although certain medications and vitamins can alter urine color.

Calcium, Vitamin D, and Bone Health

Bone is living tissue that is constantly remodeled throughout life. With age, bone breakdown gradually exceeds bone formation, increasing the risk of osteoporosis and fractures.

Adequate calcium remains important, but vitamin D is equally critical because it enables calcium absorption from the intestine. Unfortunately, aging skin produces less vitamin D in response to sunlight, and many older adults spend less time outdoors.

Dairy products, fortified plant milks, canned salmon with bones, and leafy green vegetables contribute calcium, while fatty fish and fortified foods provide modest amounts of vitamin D.

Because deficiency is common, many physicians recommend vitamin D supplementation based on blood test results.

Vitamin B12: A Common but Often Silent Deficiency

Vitamin B12 deserves special attention because deficiency becomes increasingly common after age 60.

Normal absorption requires adequate stomach acid to separate vitamin B12 from proteins in food. Aging, along with medications such as proton pump inhibitors and metformin, often reduces stomach acidity.

Symptoms may develop gradually and include fatigue, numbness or tingling in the hands and feet, difficulty walking, poor balance, memory problems, depression, and anemia.

Fortunately, crystalline vitamin B12 found in supplements and fortified foods bypasses many of these absorption problems and is highly effective in preventing or correcting deficiency.

Do Supplements Become More Important?

For many older adults, the answer is yes—but only selectively.

The ideal source of nutrition remains a balanced diet rich in vegetables, fruits, whole grains, legumes, lean proteins, dairy or fortified alternatives, nuts, seeds, and healthy oils. Foods contain thousands of biologically active compounds that supplements cannot fully replicate.

Nevertheless, certain supplements become increasingly useful as people age.

Vitamin D is among the most commonly recommended because deficiency is widespread and can adversely affect bone and muscle health. Vitamin B12 supplementation is appropriate for many older adults, particularly those taking metformin or acid-suppressing medications or those with laboratory evidence of deficiency.

Calcium supplements may be useful when dietary intake is inadequate, although obtaining calcium from food is generally preferred because large supplemental doses have been associated with possible cardiovascular concerns.

Protein powders and ready-to-drink nutritional shakes can help individuals with poor appetite, difficulty chewing, chronic illness, or increased protein requirements. Whey protein is especially effective because of its high leucine content.

Omega-3 supplements may benefit individuals who rarely consume fish, although eating fish remains the preferred strategy.

One supplement attracting increasing attention is creatine monohydrate. Long used by athletes, creatine has substantial evidence supporting its ability to improve muscle strength and enhance the benefits of resistance exercise in older adults. When taken in appropriate doses by healthy individuals, it appears remarkably safe, though people with significant kidney disease should consult their physician before using it.

In contrast, the evidence for many heavily marketed anti-aging supplements—including collagen powders, testosterone boosters, proprietary muscle blends, and high-dose antioxidant formulas—is considerably weaker. Some may offer modest benefits in selected circumstances, but many lack rigorous scientific support.

See my earlier post for more information: Supplement Smarts: What Seniors Should Know Before Reaching for That Bottle

Eating for Health, Not Simply Longevity

Nutrition is not about adding years to life alone. It is about adding life to those years.

A healthy diet cannot stop aging, but it can influence how well we age. Adequate protein helps preserve muscle and independence. Healthy carbohydrates provide steady energy. Fiber supports digestive and cardiovascular health. Unsaturated fats protect the heart and nourish the brain. Proper hydration reduces illness and maintains physical and mental function. Carefully selected supplements can fill nutritional gaps when food alone is insufficient.

Perhaps the most encouraging news is that it is never too late to benefit. Studies consistently show that older adults who improve their diet, remain physically active, and maintain adequate protein intake can increase muscle strength, improve balance, reduce the risk of chronic disease, and enhance quality of life—even well into their seventies, eighties, and beyond.

The old saying that “you are what you eat” may oversimplify nutrition, but it captures an enduring truth. As the years accumulate, every meal becomes another opportunity to nourish not just the body, but the ability to continue living fully, independently, and well.

Medical Disclaimer

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Image generated by author using ChatGPT.

References

Bauer J, Biolo G, Cederholm T, et al. Evidence-Based Recommendations for Optimal Dietary Protein Intake in Older People. Journal of the American Medical Directors Association. 2013.

Deutz NEP, Bauer JM, Barazzoni R, et al. Protein intake and exercise for optimal muscle function with aging. Clinical Nutrition. 2014.

Volpi E, Campbell WW, Dwyer JT, et al. Is the Optimal Level of Protein Intake for Older Adults Greater Than the Recommended Dietary Allowance? The Journals of Gerontology: Series A. 2013.

U.S. Department of Agriculture & U.S. Department of Health and Human Services. Dietary Guidelines for Americans, 2025–2030. https://www.dietaryguidelines.gov

National Institute on Aging. Healthy Eating As You Get Older. https://www.nia.nih.gov/health/healthy-eating

National Institutes of Health Office of Dietary Supplements. https://ods.od.nih.gov

European Society for Clinical Nutrition and Metabolism (ESPEN). Guideline on Clinical Nutrition and Hydration in Geriatrics. https://www.espen.org

When the Body’s Blueprint Has a Flaw: A Look at Ehlers-Danlos Syndrome

By John Turley

On July 10, 2026

In Medicine

Understanding the Disorder

Most people have heard of arthritis, lupus, or osteoporosis, but relatively few recognize the name Ehlers-Danlos syndrome (EDS). Yet this group of inherited connective tissue disorders affects thousands of people worldwide and can profoundly alter nearly every aspect of daily life. For some, it means unusually flexible joints and chronic pain. For others, it carries the risk of ruptured blood vessels or internal organs. Between these extremes lies a remarkably diverse family of disorders that illustrates just how important the body’s structural framework truly is.

Ehlers-Danlos syndrome is not a single disease but a collection of thirteen recognized hereditary disorders that share one common feature: abnormalities in connective tissue. Connective tissue forms the body’s internal scaffolding, providing strength, flexibility, and support to the skin, joints, blood vessels, ligaments, tendons, and many internal organs. When this framework is weakened, the effects can extend throughout the body.

Although EDS has long been considered rare, growing awareness and improved diagnostic methods suggest it may be more common than previously believed. Many individuals spend years seeking an explanation for symptoms that are dismissed as unrelated or attributed to anxiety, chronic pain syndromes, or simple clumsiness. Increased recognition has begun shortening this diagnostic journey, but many patients still experience significant delays before receiving an accurate diagnosis.

The Biology Behind EDS

At the heart of Ehlers-Danlos syndrome is collagen, the most abundant protein in the human body. Collagen functions much like the steel reinforcing bars embedded within concrete. It gives tissues strength while allowing them to remain flexible enough to move without tearing.

Collagen is found almost everywhere, including the skin, tendons, ligaments, cartilage, bones, blood vessels, intestines, and the protective coverings surrounding many organs. Multiple genes direct the production, assembly, and maintenance of collagen fibers and other components of the extracellular matrix—the microscopic framework that supports cells throughout the body.

In EDS, inherited genetic mutations interfere with this process. Depending on which gene is affected, collagen may be produced incorrectly, assembled improperly, or fail to provide adequate structural support. The resulting weakness affects whichever tissues rely most heavily on the defective protein.

The pattern of inheritance varies among the different forms of EDS. Many are inherited in an autosomal dominant fashion, meaning that a child has a 50 percent chance of inheriting the disorder if one parent carries the abnormal gene. Other forms are autosomal recessive, requiring defective copies from both parents, while some cases result from entirely new mutations with no previous family history.

One notable exception remains the most common subtype: hypermobile Ehlers-Danlos syndrome (hEDS). Despite years of intensive research, no single genetic mutation has yet been identified. As a result, hEDS remains a clinical diagnosis based on characteristic symptoms and examination findings rather than laboratory confirmation. Identifying its underlying genetic basis is one of the major goals of current EDS research.

The syndrome bears the names of two physicians who helped characterize it in the early twentieth century: Danish dermatologist Edvard Ehlers and French physician Henri-Alexandre Danlos.

A Family of Disorders

The 2017 International Classification recognizes thirteen distinct forms of Ehlers-Danlos syndrome. While all involve connective tissue abnormalities, each subtype has its own characteristic pattern of symptoms and complications.

Hypermobile EDS

Hypermobile EDS is by far the most frequently diagnosed subtype. Its defining features include generalized joint hypermobility, chronic musculoskeletal pain, and varying degrees of skin involvement. Individuals may be able to bend their fingers, elbows, knees, or spine far beyond the normal range of motion.

Although hypermobility can appear impressive, it often comes at a significant cost. Joints that move too freely lack stability, making them prone to sprains, partial dislocations, and complete dislocations during everyday activities. Chronic pain and fatigue frequently become the most disabling aspects of the disorder.

Many people with hypermobile EDS also experience additional conditions that appear to occur more frequently than expected. These include disorders of the autonomic nervous system, particularly postural orthostatic tachycardia syndrome (POTS), gastrointestinal motility problems, chronic headaches, and persistent fatigue. Researchers continue to investigate why these conditions commonly occur together.

Classical EDS

Classical EDS primarily affects the skin and joints. It usually results from mutations involving genes responsible for type V collagen.

Patients typically have remarkably soft, velvety skin that stretches much farther than normal before returning to its original position. Wounds often heal poorly, producing thin, widened scars sometimes described as “cigarette-paper scars.” Easy bruising is common, and even relatively minor injuries may leave permanent marks.

Joint hypermobility is also a prominent feature, although the degree varies considerably from person to person.

Vascular EDS

Among all forms of Ehlers-Danlos syndrome, vascular EDS is the most serious. It results from mutations affecting type III collagen, an important structural protein within blood vessel walls and many internal organs.

Unlike the dramatic flexibility often seen in hypermobile EDS, patients with vascular EDS may have only mild joint laxity, usually involving the small joints of the hands and feet. Instead, the major concern is tissue fragility.

Arteries may develop aneurysms, tears, or spontaneous ruptures. The intestines and uterus are also unusually fragile, creating life-threatening medical emergencies that often occur without warning.

Many individuals with vascular EDS also have recognizable physical characteristics, including thin translucent skin, prominent veins, a narrow nose, thin lips, and relatively large, prominent eyes. These findings, however, are not present in every patient.

The Rarer Forms

The remaining subtypes are uncommon, with some documented in only a small number of families worldwide.

Kyphoscoliotic EDS often presents during infancy with severe muscle weakness and progressive curvature of the spine. Arthrochalasia EDS causes profound joint instability beginning at birth, while dermatosparaxis EDS produces exceptionally fragile, sagging skin that tears easily.

Other rare forms primarily affect the eyes, heart valves, muscles, teeth, or periodontal tissues. Although individually uncommon, these disorders illustrate how connective tissue supports virtually every organ system in the body.

One Disease, Many Presentations

One of the greatest challenges in understanding Ehlers-Danlos syndrome is its extraordinary variability. Even individuals carrying the same genetic mutation may experience dramatically different symptoms and levels of disability. Some remain physically active with relatively mild limitations, while others develop chronic pain, repeated joint injuries, or life-threatening vascular complications.

This wide spectrum often complicates diagnosis. Physicians unfamiliar with EDS may not immediately recognize that seemingly unrelated symptoms—frequent sprains, digestive problems, easy bruising, chronic fatigue, headaches, and dizziness—can all stem from a single underlying connective tissue disorder.

Ehlers-Danlos syndrome occupies a peculiar position in medicine: common enough that most physicians will encounter it, but rare enough — and complex enough — that many will misidentify it or underestimate it. As awareness grows and genetic testing becomes more accessible, diagnostic delays are slowly shortening.

For patients living with EDS today, the message is mixed but not without hope. For most, a normal lifespan is likely, though the journey will require proactive self-advocacy, knowledgeable medical partnerships, and real-world adaptation. For those with vascular EDS, the risks are serious and demand vigilance — but even here, the medical community is making progress.

Recognizing these patterns is the first step toward appropriate treatment. Although EDS cannot currently be cured, an accurate diagnosis allows patients and physicians to anticipate complications, tailor therapy, and improve long-term quality of life.

For a more detailed discussion of EDS, contact me at WWW.grumpydocwv@gmail.com

Medical Disclaimer

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Illustration Generated by author using ChatGPT.

Sources and Further Reading:

Note: The 2017 diagnostic classification is the current standard; updated criteria are expected in 2026.

1. Francomano et al. (2024). Research advances in EDS. Frontiers in Medicine

2. Ritelli & Colombi (2020). Molecular Genetics and Pathogenesis of EDS. Genes, MDPI

3. Zschocke et al. (2024). Genetic diagnosis of EDS. Medical Genetics / NIH

4. StatPearls: Ehlers-Danlos Syndrome (2023). NCBI Bookshelf

5. GeneReviews: Classic EDS (updated 2024). NCBI Bookshelf

6. GeneReviews: Vascular EDS (updated 2025). NCBI Bookshelf

7. MedlinePlus Genetics: Ehlers-Danlos Syndrome. NIH MedlinePlus

8. Cleveland Clinic: EDS Overview. my.clevelandclinic.org

9. Cleveland Clinic: Vascular EDS. my.clevelandclinic.org

10. Medscape: EDS Background and Pathophysiology. emedicine.medscape.com

11. MSD Manual Professional: EDS in Pediatrics. msdmanuals.com

12. Frank et al. (2019). Vascular EDS: Long-Term Observational Study. Journal of the American College of Cardiology / ScienceDirect

13. Case Report: Novel COL3A1 mutation in vEDS. PMC / NCBI

14. EDS Society: The Road to 2026. eds.clinic

15. EDS Society: Life Expectancy in EDS. eds.clinic

C-Reactive Protein: The Body’s Inflammation Alarm

By John Turley

On July 3, 2026

In Medicine

Structure, Function, Testing, and Clinical Implications

If you’ve ever had blood drawn during a bout of illness or a workup for heart disease risk, there’s a decent chance your doctor ordered a C-reactive protein test, usually shortened to CRP. It’s one of the most widely ordered lab tests in the world. CRP is one of the body’s most sensitive early-warning systems for inflammation. Understanding where it comes from, what it does, and how doctors use it reveals a lot about how the immune system operates and why chronic low-grade inflammation has become such a central concern in modern medicine. Warning: doctor talk will follow.

A Protein With a Peculiar Origin Story

CRP was discovered almost by accident in 1930 by William Tillett and Thomas Francis, working in Oswald Avery’s laboratory at Rockefeller University. They were studying patients with acute pneumococcal pneumonia caused by the bacteria Streptococcus pneumoniae and noticed that blood from acutely ill patients caused a specific bacterial substance to clump together. That substance was the “C polysaccharide” in the bacterial cell wall, which gave the protein its name.

For decades CRP was used as a crude yes-or-no indicator of serious infection. It wasn’t until the late 20th century that more sensitive lab techniques revealed its value for detecting the subtle, chronic inflammation now linked to cardiovascular disease and opening a major new chapter in preventive medicine. I had been in practice for several years before I even became aware of CRP.

Shape Matters: The Five-Sided Structure of CRP

CRP belongs to a protein family called the pentraxins, named from the Greek word for “five” because of the protein’s pentagonal shape. Under an electron microscope, CRP looks like five identical subunits arranged in a ring, roughly like five coins fanned into a disc. For history buffs, it resembles the five-star rank worn by General Eisenhower.

Each subunit carries a binding site made of two calcium ions nestled next to a small hydrophobic pocket. This is where CRP does its recognition work: the calcium-dependent sites allow it to grab onto phosphocholine (PC), a molecule found in the membranes of damaged and dying cells, as well as in the outer coatings of many bacteria and fungi. Phosphocholine is so widespread in biology that this single binding chemistry lets CRP respond to an enormous range of threats including microbial invaders and the body’s own dead cells.

CRP doesn’t always exist in this five-subunit ring form. The pentameric version (pCRP) circulates in healthy blood. But at sites of active tissue damage, such as inside an inflamed artery wall, it can break apart into individual monomers (mCRP). These two forms turn out to have strikingly different effects on the immune system.

What CRP Does

It’s tempting to think of CRP as a passive number on a lab report, but it’s actually an active participant in the immune response. It plays at least four major roles.

First, CRP is a pattern recognition molecule. Unlike the antibodies generated by your adaptive immune system which take days or weeks to respond to a specific threat, CRP responds immediately to general molecular patterns shared by pathogens and damaged cells. This makes it a first-responder tool within the innate immune system, the body’s rapid defense network.

Second, once CRP binds to a pathogen or dying cell, it acts as an opsonin, essentially a molecular flag that says “eat this.” Immune cells called phagocytes (macrophages and neutrophils) recognize CRP-coated targets and engulf them, accelerating the clearance of both bacteria and cellular debris.

Third, CRP can activate the complement system, a cascade of proteins that further tags pathogens for destruction. Crucially, CRP appears to stop short of triggering the most destructive steps of that cascade. The net effect is a measured, targeted immune response rather than an all-out inflammatory assault.

Fourth, and this is where things get interesting, the pentameric and monomeric forms of CRP have opposing effects. The pentameric form in circulation is primarily anti-inflammatory, quietly clearing dead cells without triggering unnecessary immune activation. But the monomeric form that appears at sites of tissue damage can amplify inflammation: activating platelets, recruiting immune cells to vessel walls, and stimulating the release of the inflammatory signaling molecule. CRP is neither simply good nor simply bad — it’s context-dependent, functioning as a careful janitor in healthy tissue but potentially fanning the flames in already-inflamed environments.

Fast, Sensitive, and Liver-Made

CRP is produced primarily by liver cells (hepatocytes) in response to immune signals. When immune cells detect infection or tissue damage, they release cytokines, which travel to the liver and switch on CRP production.

One of CRP’s great clinical virtues is speed. Levels can begin rising within four to six hours of an inflammatory event and typically peak within 24 to 48 hours. When the inflammation resolves, CRP falls just as quickly, its half-life in circulation is only about 19 hours. This fast-on, fast-off behavior makes CRP an excellent real-time readout of what the immune system is doing right now, not weeks ago. Because of this early availability, it is referred to as an acute phase reactant.

Under normal, non-inflammatory conditions, CRP in the blood typically measures below 1 milligram per liter (mg/L). During serious bacterial infection or major tissue injury, levels can spike above 400 mg/L — a several-hundred-fold increase. CRP also has a practical advantage for testing: it doesn’t fluctuate throughout the day, and fasting is not required before a blood draw.

The Many Uses of CRP in Clinical Medicine

The oldest application of CRP testing is detecting and monitoring bacterial infection. Very high values — generally above 100 mg/L — strongly suggest bacterial rather than viral infection, since viruses tend to provoke a much more modest CRP rise. In sepsis (the life-threatening systemic response to infection), CRP is one of several markers used to assess severity and track the response to treatment.

CRP is also routinely used to monitor autoimmune diseases. In rheumatoid arthritis, CRP is included in standard disease activity scoring tools. Tracking CRP over time helps clinicians judge whether treatments like disease-modifying drugs are working. One notable exception: in systemic lupus erythematosus (SLE), CRP often stays surprisingly low even during active flares.

Perhaps the most debated expansion of CRP testing in recent decades is its role in cardiovascular risk assessment. That story begins with the recognition that atherosclerosis, the plaque buildup inside artery walls, is fundamentally an inflammatory process, not just a plumbing problem caused by too much cholesterol. As that insight took hold in the 1990s, researchers began asking whether CRP could predict heart attack risk the way cholesterol does.

The answer was yes, but only with a more sensitive test. Standard CRP assays can’t detect levels below about 10 mg/L, which is fine for infections but misses the chronic low-level inflammation relevant to cardiovascular risk. A newer high-sensitivity CRP test (hs-CRP) can measure levels as low as 0.01 mg/L. Using hs-CRP, researchers found that even modest CRP elevations, within the range once considered entirely normal, carry meaningful cardiovascular risk.

The American Heart Association and the CDC use these hs-CRP thresholds for cardiovascular risk: below 1 mg/L is low risk; 1 to 3 mg/L is intermediate risk; above 3 mg/L is higher risk. A large UK Biobank analysis of nearly 450,000 people found that individuals with hs-CRP above 3 mg/L had a 34% higher risk of major cardiovascular events and a 61% higher risk of cardiovascular death compared to those below 1 mg/L.

The landmark JUPITER trial demonstrated that patients with low LDL cholesterol, but elevated hs-CRP (above 2 mg/L) still benefited substantially from statin therapy — in terms of reduced heart attacks and strokes. This reframed how cardiologists think about inflammation as a cardiovascular target independent of cholesterol levels.

Beyond infection, autoimmune disorders, and heart disease, elevated CRP has been linked to type 2 diabetes, metabolic syndrome, chronic kidney disease, COPD, depression, and neurodegenerative diseases, all conditions where chronic low-grade inflammation is increasingly recognized as a contributing factor rather than just a side effect.

Measuring CRP: The Standard Test vs. the High-Sensitivity Test

CRP testing is straightforward, just a standard blood draw, no fasting required. Modern automated lab analyzers make it fast and inexpensive, which explains why it shows up so often in clinical workups.

The standard CRP test is the workhorse for detecting acute infection and monitoring inflammatory flares in hospitalized patients. The hs-CRP test uses more sensitive techniques and is the test used for cardiovascular risk assessment.

Because hs-CRP can fluctuate modestly from day to day, cardiovascular guidelines recommend averaging two measurements taken about two weeks apart. Acute illness, recent injury, or even a hard workout can temporarily elevate hs-CRP and produce a misleading result.

Several factors can push CRP higher independently of the disease in question: obesity, smoking, high blood pressure, metabolic syndrome, low HDL cholesterol, and chronic low-grade infections such as gum disease. Age also gradually raises baseline CRP. On the other side, moderate physical activity, weight loss, and statins are all associated with lower CRP — which partly explains the broader cardiovascular benefits of statin therapy beyond cholesterol reduction.

What CRP Can’t Tell You

For all its usefulness, CRP is a nonspecific marker. A reading of 50 mg/L is consistent with a kidney infection, an autoimmune flare, a recent heart attack, or an abdominal cancer. CRP tells you that inflammation or tissue damage is happening somewhere; it doesn’t tell you where or why. Clinical context including symptoms, medical history, and other lab results, is essential for interpretation.

There’s also a genuine unresolved debate about whether CRP elevation actually causes cardiovascular disease or is simply a marker of underlying inflammatory risk. Animal studies in CRP-deficient or CRP-enhanced models have produced inconsistent results. Mendelian randomization studies in humans, a statistical technique that uses genetic variants to approximate a randomized experiment, have generally not supported CRP as a causal driver of heart disease, suggesting it may be more of a reaction than a root cause.

Finally, hs-CRP testing, despite strong evidence, remains underused in primary care, particularly in primary prevention. The 2024 European Society of Cardiology guidelines for chronic coronary syndromes did recommend assessing hs-CRP in patients with suspected coronary artery disease, which reflects accumulating evidence for its utility, but broader implementation lags behind the science. I have to admit, when I was still in active practice, I was unaware of the role of hs-CRP in primary prevention. At the time, it was generally thought to be of use in secondary prevention—actions taken after an initial event. Be sure and ask your doctor about it.

CRP is, in the end, a remarkably versatile tool — a protein that has been doing immune surveillance since long before medicine had a name for it, and one that continues to find new clinical relevance with each decade of research.

Medical Disclaimer

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Image generated by the author using ChatGPT

Sources

The following peer-reviewed and clinical references support this article:

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Agrawal & Wu (2024). Editorial: Biology of C-reactive protein. Frontiers in Immunology. — https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2024.1445001/full

Volanakis (2001). Human C-reactive protein: expression, structure, and function. Molecular Immunology. PubMed. — https://pubmed.ncbi.nlm.nih.gov/11532280/

Thompson et al. (2004). C-reactive protein. Journal of Biological Chemistry. — https://www.jbc.org/article/S0021-9258(19)32228-8/fulltext

Salazar et al. (2014). C-Reactive Protein: An In-Depth Look into Structure, Function, and Regulation. International Scholarly Research Notices. PMC. — https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4897210/

StatPearls: C-Reactive Protein: Clinical Relevance and Interpretation. PubMed. — https://pubmed.ncbi.nlm.nih.gov/28722873/

Medscape: High-Sensitivity C-Reactive Protein: Reference Range, Interpretation. — https://emedicine.medscape.com/article/2094831-overview

Ridker PM (2003). High-sensitivity C-reactive protein: clinical importance. PubMed. — https://pubmed.ncbi.nlm.nih.gov/15258556/

Kraaijenhof et al. (2025). LDL cholesterol, CRP, and lipoprotein(a) universal screening. European Heart Journal. ACC summary. — https://www.acc.org/latest-in-cardiology/articles/2025/12/01/01/prioritizing-health-hscrp

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Larsen et al. (2024). C-reactive protein and cardiovascular risk in the general population. European Heart Journal. — https://academic.oup.com/eurheartj/advance-article/doi/10.1093/eurheartj/ehaf937/8377304

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Not All Fat Is the Enemy

By John Turley

On June 23, 2026

In Medicine

A Plain-Language Guide to Dietary Fats, What They Do, and How to Make Better Choices

The Fat Myth That Stuck Around Too Long

For decades, the American food industry sold us a story: fat is bad, and less of it is better. By the 1980s and 1990s, supermarket shelves sagged under the weight of fat-free cookies, low-fat chips, and reduced-fat everything. The problem, of course, was that when food companies stripped out the fat, they often replaced it with sugar and refined carbohydrates to maintain flavor — and Americans got sicker anyway. Heart disease rates climbed. Obesity rates climbed. And gradually, the nutrition science world came to a more nuanced conclusion: what kind of fat you eat matters far more than how much.

Today, the scientific consensus is clear enough that even cautious institutions like the American Heart Association and Harvard’s School of Public Health distinguish sharply between fats that harm us and fats that we actually need to survive. This article walks through the main types of dietary fat — where they come from, what they do in the body, and how the average American can make smarter choices without turning every meal into a chemistry lesson.

The Chemistry, Simply Put

You don’t need a biochemistry degree to understand dietary fat, but a little structural context goes a long way. All fats are built from molecules called fatty acids — long chains of carbon atoms linked together, with hydrogen atoms attached. The difference between fat types comes down to how those hydrogen atoms are arranged.

Saturated Fats

Saturated fats are “saturated” with hydrogen atoms — meaning every carbon in the chain is bonded to as many hydrogens as it can possibly hold. This gives them a rigid, tightly packed structure. The practical consequence? Most saturated fats are solid at room temperature — think of the white fat marbled through a raw steak, or a stick of butter sitting on a counter.

Unsaturated Fats

Unsaturated fats have at least one double bond between carbon atoms in the chain — which means they are missing some hydrogen atoms. That double bond creates a “kink” in the molecular chain, preventing the fat molecules from packing tightly together. The result is that Unsaturated Fats

Unsaturated fats have at least one double bond between carbon atoms in the chain — which means they are missing some hydrogen atoms. That double bond creates a “kink” in the molecular chain, preventing the fat molecules from packing tightly together. The result is that unsaturated fats are liquid at room temperature, olive oil being the most familiar example.

Within unsaturated fats, there are two important subtypes based on how many double bonds exist. Monounsaturated fats (MUFAs) have exactly one double bond. Polyunsaturated fats (PUFAs) have two or more. Both behave very differently in the body than saturated fats and generally, much more favorably.

Trans Fats: The Artificial Villain

Trans fats deserve their own brief mention because they are the one type of fat that virtually every credible nutrition authority agrees should be avoided as completely as possible. Most trans fats are artificially created through a process called partial hydrogenation — taking liquid vegetable oil and pumping hydrogen through it under high pressure to make it solid and shelf-stable. The result is partially hydrogenated oil, which was found in margarine, shortening, packaged cookies, and countless processed snacks for most of the twentieth century.

The FDA banned the addition of partially hydrogenated oils to U.S. food products based on overwhelming evidence that industrial trans fats raise “bad” LDL cholesterol, lower “good” HDL cholesterol, and significantly increase cardiovascular risk. Small amounts of naturally occurring trans fats are found in animal products like beef and dairy, and these appear to be metabolically distinct from industrial trans fats — less concerning but still something most experts recommend limiting.

Saturated Fats in Detail

Where They Come From

Saturated fats are found predominantly in animal products and a handful of tropical plant oils. The major food sources include fatty cuts of beef and pork, poultry skin, full-fat dairy products (butter, whole milk, cream, cheese), lard, and beef tallow. On the plant side, coconut oil and palm oil are notably high in saturated fat — which surprises many people who assume all plant-based oils are heart-healthy. Coconut oil in particular has been heavily marketed as a “superfood” in recent years, a claim that runs in conflict with the science.

What They Do in the Body

The relationship between saturated fat and cardiovascular health has been one of the most debated topics in nutrition science for the past two decades. The original view, dominant for most of the 20th century, was straightforward: eating saturated fat raises LDL (“bad”) cholesterol, and higher LDL raises the risk of heart disease and type 2 diabetes. That basic chain of reasoning is still supported by substantial evidence.

However, the picture has grown more complicated. Research over the past decade has raised legitimate questions about whether all saturated fats are equally problematic, and whether saturated fat in isolation — rather than as part of an overall dietary pattern — is the right thing to be measuring. A study cited by the National Institutes of Health found that replacing saturated fats with refined carbohydrates (which is what happened when Americans went fat-free in the 1980s) did not reduce cardiovascular risk. The key variable isn’t just removing saturated fat — it was what you replace it with.

The evidence clearly shows that replacing saturated fats with unsaturated fats reduces cardiovascular risk. Replacing them with sugar and white flour does not. That distinction has become the cornerstone of modern dietary fat guidance.

How Much Is Too Much?

Current guidance varies slightly between major health organizations, but the general range is consistent. The Dietary Guidelines for Americans recommends keeping saturated fat below 10% of total daily calories. The American Heart Association is more conservative, recommending below 6% — which for a 2,000-calorie diet works out to about 13 grams per day, roughly the amount in a single tablespoon of butter combined with a small handful of cheese.

Monounsaturated Fats (MUFAs)

Where They Come From

Monounsaturated fats are the dominant fat in olive oil, avocados, peanut oil, canola oil, and most nuts — including almonds, cashews, and hazelnuts. They are the nutritional backbone of the Mediterranean diet, which has been studied more extensively for cardiovascular benefit than perhaps any other dietary pattern in history.

Health Benefits

The evidence in favor of MUFAs is robust . Monounsaturated fats lower LDL cholesterol while maintaining levels of HDL (“good”) cholesterol when they replace saturated fat in the diet. A clinical trial called the OmniHeart study found that shifting to a diet rich in monounsaturated fats — compared to a carbohydrate-rich diet — lowered blood pressure, improved cholesterol profiles, and reduced estimated cardiovascular risk. Beyond the heart, research suggests that swapping saturated fats for MUFAs may also support modest weight and body fat reduction even without changing total calorie intake.

MUFAs are also notably stable at cooking temperatures, which makes olive oil a practical and healthy choice for most everyday cooking — sautéing vegetables, making salad dressings, or roasting proteins.

Polyunsaturated Fats (PUFAs) — The Essential Fats

Polyunsaturated fats are, in many ways, the most scientifically interesting category because they include the only two dietary fats that the human body genuinely cannot produce on its own and must obtain from food. These are called essential fatty acids, and they fall into two families: omega-3s and omega-6s.

Omega-3 Fatty Acids

What They Are and Where They Come From

Omega-3s are the fats most Americans have heard of in the context of fish oil supplements. The three main types are ALA (alpha-linolenic acid), EPA (eicosapentaenoic acid), and DHA (docosahexaenoic acid). ALA is found primarily in plant sources — walnuts, flaxseeds, chia seeds, and canola or soybean oil. EPA and DHA are found in fatty fish — salmon, sardines, mackerel, herring, and trout — as well as in algae-based oils, which is where fish get their omega-3s in the first place.

The body can convert ALA into EPA and DHA, but only very inefficiently. For practical purposes, regular fish consumption is the most reliable way to maintain adequate EPA and DHA levels. The American Heart Association recommends at least two servings of fatty fish per week for this reason.

Health Benefits

Omega-3 fatty acids are structural components of cell membranes throughout the body and serve as precursors to signaling molecules that regulate inflammation. Their most well-established benefits are cardiovascular: they reduce triglyceride levels, stabilize heart rhythms, and appear to lower the risk of sudden cardiac death. Beyond the heart, research suggests they play important roles in brain development (particularly during fetal development and infancy), may reduce the risk of certain neurodegenerative conditions, and have documented anti-inflammatory effects relevant to conditions like rheumatoid arthritis.

A recent review published in the journal Foods found that omega-3s may help delay the onset of neurodegenerative disorders such as Alzheimer’s and Parkinson’s disease, reduce depression, and contribute to cancer prevention, though the authors note that more research is needed to fully understand these relationships.

Omega-6 Fatty Acids

What They Are and Where They Come From

Omega-6 fatty acids are found in most vegetable oils — corn oil, soybean oil, sunflower oil, safflower oil — as well as in nuts, seeds, and poultry. Linoleic acid (LA) is the primary dietary omega-6 and is the only one classified as truly essential.

The Omega-6/Omega-3 Imbalance

Here is where things get complicated in a uniquely American way. The typical Western diet contains far more omega-6 fats than necessary and not nearly enough omega-3 fats. The ideal ratio of omega-6 to omega-3 in the diet is thought to be somewhere between 4:1 and 1:1. The actual ratio in the average American diet is estimated at anywhere from 15:1 to 20:1 — a dramatic imbalance driven by the ubiquity of processed foods and vegetable oils in the food supply.

This matters because omega-6 and omega-3 fatty acids compete for the same metabolic pathways in the body. While omega-6s in appropriate amounts are essential and beneficial, a chronically elevated omega-6 to omega-3 ratio is associated with increased inflammation and higher risk of coronary heart disease, hypertension, diabetes, rheumatoid arthritis, and some neurodegenerative conditions. The goal is not to eliminate omega-6s but to bring the ratio back into better balance — primarily by increasing omega-3 intake.

What a Healthy Fat Profile Actually Looks Like

Putting all of this together, what does a well-balanced dietary fat intake actually look like? The evidence points toward a few consistent principles.

In a typical healthy diet, 20–35% of total daily calories can come from fat. Within that total, the composition matters enormously. Unsaturated fats — both mono and polyunsaturated — should make up the bulk. Saturated fats should be limited to under 10% of daily calories by federal guidelines, or under 6% if you are following the American Heart Association’s more aggressive recommendation. Trans fats, the industrial kind, should be avoided as close to completely as possible.

The two truly essential fats — linoleic acid (omega-6) and alpha-linolenic acid (omega-3) — must come from the diet because the human body cannot synthesize them. Everything else the body can manufacture from raw materials, given enough of the right building blocks.

For omega-3s specifically, the WHO and EFSA recommend at least 250 mg per day of EPA + DHA. And recommend 1.6 grams of ALA per day for adult males and 1.1 grams for adult females. Most Americans fall well short of these targets.

Practical Ways to Shift Your Fat Intake

Dietary change works best when it’s specific and sustainable — not when it involves a complete pantry overhaul overnight. Here are evidence-based adjustments that can meaningfully improve the fat profile of a typical American diet.

Replace Saturated Fats With Unsaturated Fats at the Cooking Stage

Instead of frying or sautéing in butter, lard, or palm oil, switch to olive oil, avocado oil, or canola oil. This single substitution is one of the most consistently supported interventions in dietary fat research. For those who prefer a buttery flavor, using a small amount of butter blended with olive oil is a practical middle ground.

Eat Fatty Fish Twice a Week

Salmon, sardines, mackerel, herring, and trout are all excellent sources of EPA and DHA omega-3s. The American Heart Association’s recommendation of two fish servings per week is a well-established and achievable benchmark. Canned fish — particularly canned salmon and sardines — is inexpensive and just as nutritious as fresh. Tuna is an option but requires an larger serving.

Add Nuts, Seeds, and Avocados

A handful of walnuts (a particularly good plant source of ALA omega-3s), a tablespoon of ground flaxseed in yogurt or oatmeal, or half an avocado on toast are all straightforward ways to shift your fat intake in a healthier direction. Nuts and avocados are also rich in monounsaturated fats that support cholesterol health.

Choose Leaner Cuts of Meat

Selecting leaner cuts of beef and pork — those labeled “loin” or “round,” or ground meat that is 90–95% lean — can substantially reduce saturated fat intake without eliminating meat from the diet. Removing skin from poultry before cooking similarly reduces saturated fat in a simple and inexpensive way.

Read Labels for Trans Fats — Carefully

Food packaging can legally claim “0 grams of trans fat” if a product contains less than 0.5 grams per serving. If you eat multiple servings of such products, those fractions add up. The safeguard is to check the ingredient list for “partially hydrogenated oil” — if it appears anywhere, the product contains industrial trans fats., regardless of what the front label says.

Limit — Don’t Necessarily Eliminate — Saturated Fat

A realistic goal is not to strip all saturated fat from your diet but to keep it within the recommended range. Full-fat dairy in moderate amounts, an occasional burger, or butter used sparingly are unlikely to cause harm in the context of an otherwise balanced eating pattern. What matters most, as nutrition experts now emphasize, is the overall dietary pattern — not any single food or nutrient in isolation.

The Bottom Line

Fat is not a dietary villain. It is an essential macronutrient that the body depends on for energy, vitamin absorption, hormone production, brain function, and cell membrane integrity. The question has never really been whether to eat fat — it has always been which fats to prioritize.

The evidence points consistently in one direction: lean toward unsaturated fats (olive oil, nuts, avocados, fatty fish), keep saturated fat in check, avoid industrial trans fats entirely, and pay particular attention to getting enough omega-3 fatty acids, which most Americans chronically under-consume. These adjustments don’t require extreme dietary measures. They require informed choices made consistently — and that, ultimately, is the most sustainable kind of nutrition science.

Illustration generated by author using ChatGPT

Note: The core findings in this article — that unsaturated fats are preferable to saturated fats, that omega-3 and omega-6 fatty acids are essential, and that industrial trans fats are harmful — are supported by decades of research and endorsed by major health authorities including the American Heart Association, the NIH, and the 2025 Dietary Guidelines Advisory Committee. Some nuance remains in the saturated fat debate (particularly regarding specific saturated fatty acid subtypes and their varying cardiovascular effects), and the research on omega-3s and neurological disease is still evolving.

Medical Disclaimer

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Sources

Dietary Guidelines Advisory Committee — Food Sources of Saturated Fat (2025)

Harvard T.H. Chan School of Public Health — Types of Fat

American Heart Association — Saturated Fats

American Heart Association — Fats in Foods

Mayo Clinic — Dietary Fat: Know Which to Choose

Mayo Clinic — Trans Fat Is Double Trouble for Heart Health

Healthline — Saturated vs. Unsaturated Fat: Know the Facts

Healthline — Omega-3–6–9 Fatty Acids: A Complete Overview

NCBI/PMC — Monounsaturated Fat vs Saturated Fat: Effects on Cardio-Metabolic Health and Obesity

NCBI/PMC — The Role of Omega-3 and Omega-6 Polyunsaturated Fatty Acid Supplementation in Human Health (Foods, 2025)

Linus Pauling Institute — Essential Fatty Acids

NIH — Omega-3 Fatty Acids Health Professional Fact Sheet

OCL Journal — The Omega-6/Omega-3 Fatty Acid Ratio: Health Implications

VA Nutrition Services — Common Fats and Oils (2024)

UMass Medical — Tips on Reducing Saturated Fat

MedlinePlus — Facts About Trans Fats

Brown University Health — The Truth About Trans Fats

University of Nebraska Extension — Omega-3 and Omega-6 Fatty Acids

When the Sun Bites Back

By John Turley

On June 3, 2026

In Medicine

A guide to sun injuries — what they are, how they happen, and how to protect yourself.

This is a long article; I recommend you scan through it and read the sections of most interest to you rather than trying to read through it in a single sitting.

The sun is arguably the most powerful force in our daily lives. It warms the planet, drives our seasons, and has shaped human biology for hundreds of thousands of years. A little sunlight genuinely is good for you — it triggers vitamin D production and helps regulate your sleep cycle. But the same energy that sustains life can also cause real, sometimes lasting harm when you get too much. We’re not just talking about a red nose after a day at the beach. Sun injuries span a wide spectrum, from the minor annoyance of a mild sunburn to life-threatening heat stroke to decades-long processes that end in skin cancer.

Let’s walk through the main categories of sun-related injury: what they are, the biology behind them, who’s most at risk, how to prevent them, and what to do when prevention comes too late.

The Sun’s Invisible Weapons: UV Radiation and Heat

Before we get into specific injuries, it helps to know what we’re dealing with. The sun delivers energy to Earth in three main forms: visible light (what you see), infrared radiation (what you feel as warmth), and ultraviolet (UV) radiation, which you can neither see nor feel. UV is the primary culprit behind most sun injuries to the skin and eyes.

UV radiation comes in three wavelength ranges. UVC is almost completely absorbed by the Earth’s atmosphere and generally doesn’t reach us from the sun. UVA and UVB are the ones that matter for your health. UVA rays make up the lion’s share of what reaches the Earth’s surface. They penetrate deep into the skin, cause aging effects, and suppress the immune system. UVB rays are shorter and more energetic — they’re the primary drivers of sunburn, and also the rays most directly linked to DNA damage and skin cancer. Surprisingly, even on a cloudy day a significant amount of UV radiation still reaches you.

Heat from the sun adds a second, separate threat. While UV damages cells at a molecular level, heat overwhelms the body’s ability to regulate its own temperature — a completely different mechanism leading to a different family of injuries.

The Types of Sun Injury

Sunburn

Sunburn is the most common sun injury, and most people have had at least one, some of us many more than one. It’s an acute inflammatory response triggered when UV radiation, primarily UVB, directly damages the DNA in skin cells. When that damage exceeds the ability of the cell’s repair machinery, the cell initiates a self-destruct process (called apoptosis) to prevent potentially cancerous mutations from propagating. The redness, pain, heat, and swelling of a sunburn are the skin’s inflammatory response to that mass cellular die-off.

Sunburn develops in a spectrum of severity. A mild burn produces redness and tenderness over exposed skin. A moderate burn adds blistering and significant pain. Severe sunburns are equivalent to a second-degree thermal burn and can involve extensive blistering, swelling, fever, chills, and nausea. In rare cases, especially in young children, severe sunburns can require hospitalization.

One thing worth knowing: even though we casually call sunburn a ‘first-degree burn,’ it’s technically not the same as a heat burn of the same grade. UV radiation penetrates to deeper layers of the skin than heat does, causing a different pattern of cellular injury.

Skin Cancer

This is where sunburn’s long tail becomes dangerous. Skin cancer is the most common cancer in the United States, with over 5 million cases diagnosed annually. The connection to UV exposure is not subtle — roughly 90 percent of non-melanoma skin cancers are directly associated with UV radiation from the sun.

There are three main types. Basal cell carcinoma (BCC) is the most common, with an estimated 3.6 million U.S. diagnoses each year. It tends to grow slowly and rarely spreads to other organs, but it can cause significant local destruction if ignored. Squamous cell carcinoma (SCC) is second in frequency, at about 1.8 million cases per year. It carries a somewhat higher risk of spreading than BCC. Melanoma is the least common but by far the most dangerous, accounting for most skin cancer deaths. It arises from the pigment-producing cells (melanocytes) and can spread rapidly to other organs.

The underlying mechanism in all three is UV-induced DNA damage. When UV radiation hits skin cells repeatedly over time, it scrambles the DNA segments that normally suppress tumor growth. Intermittent intense exposure — like a child getting several serious sunburns — appears particularly risky for melanoma. Cumulative lifetime exposure is more associated with BCC and SCC. Either way, the damage is slow and progressive and adds up invisibly for decades before a cancer appears.

Photokeratitis — Sunburn of the Eye

Most people have never heard of photokeratitis, but anyone who’s spent time on the water, in the snow, or at high altitude without sunglasses has been at risk. Photokeratitis is essentially a sunburn of the cornea, the clear front surface of the eye It is caused by intense or prolonged exposure to UVB radiation. It’s sometimes called ‘snow blindness’ in its most severe form, and ‘arc eye’ or ‘welder’s flash’ when caused by industrial UV sources.

At the cellular level, UV radiation interacts with cells in the cornea and conjunctiva (the membrane covering the eye), generating reactive oxygen species — unstable molecules that cause oxidative damage to cell membranes, proteins, and DNA. The inflammatory response that follows is what produces the characteristic symptoms: intense pain, a gritty sensation as though there’s sand in the eye, extreme sensitivity to light, tearing, and redness. These symptoms typically appear several hours after exposure, which is part of what makes photokeratitis so sneaky — you may not notice a problem until you’re back indoors for the evening.

The good news is that photokeratitis is almost always temporary. The cornea has a remarkable ability to regenerate its surface cells, and most cases resolve within 24 to 48 hours without any permanent damage to vision. Snow blindness occurs at high altitude where UV intensity is dramatically increased and fresh snow reflects up to 80 percent of incoming UV and is a more severe version that can temporarily blind a person, though new cells typically restore vision within a few days.

Long-term or repeated UV exposure to the eyes raises a different set of concerns. Cataracts, macular degeneration, and pterygium (a fleshy overgrowth on the eye surface) are all associated with lifetime cumulative UV exposure.

Heat-Related Illnesses

UV radiation isn’t the only player. The sun’s infrared energy — heat — creates a separate family of injuries when it overwhelms your body’s cooling mechanisms. These range from relatively mild to life-threatening.

Heat Cramps

Heat cramps are the mildest heat-related illness and present as painful muscle spasms that occur when you sweat heavily during strenuous activity in the heat. Sweating depletes both fluid and electrolytes (particularly sodium). They most often show up in the legs, arms, or abdomen. Treatment is straightforward: rest, move to a cooler spot, and slowly replace fluids and electrolytes.

Heat Exhaustion

Heat exhaustion is a more serious heat illness. It occurs when the body struggles to cool itself after prolonged heat exposure, often compounded by dehydration. Your core body temperature climbs, typically to between 100°F and 104°F. Symptoms include heavy sweating, headache, dizziness, nausea, rapid but weak pulse, and muscle cramps. The skin usually feels cool and moist. Without treatment, heat exhaustion can escalate into heat stroke.

Heat Stroke

Heat stroke is a medical emergency and the most severe heat illness. It occurs when the body’s temperature regulation fails entirely — the sweating mechanism breaks down, and the core body temperature can rise to 106°F or higher within 10 to 15 minutes. This is organ-threatening territory. Brain cells begin dying at sustained high temperatures, and heat stroke can cause permanent disability or death without rapid emergency treatment.

There are two clinical patterns. Classic heat stroke tends to affect the elderly, very young children, and people with chronic illness and occurs during prolonged heat waves. Exertional heat stroke hits otherwise healthy, physically active people — athletes, soldiers, outdoor workers — during intense physical activity in hot conditions. Both are emergencies, but exertional heat stroke can develop faster and with less warning.

Key warning signs that distinguish heat stroke from heat exhaustion: an extremely high body temperature (above 104°F), confusion or slurred speech, hot and dry skin (though not always), and loss of consciousness or seizures. If you suspect heat stroke, call 911immediately — this is not a wait-and-see situation.

Photosensitivity and Drug Reactions

A less-discussed but fairly common category of sun injury involves the interaction between UV radiation and certain medications or chemicals. Phototoxic reactions happen when a substance in or on the skin absorbs UV radiation and generates a chemical reaction that damages tissue — essentially a chemical sunburn. Photoallergic reactions are immune-mediated: the UV-altered substance triggers an immune response, producing a rash that can spread even to sun-unexposed areas.

Medications commonly associated with photosensitivity include certain antibiotics (especially tetracyclines and fluoroquinolones, cipro being the most common), diuretics, some blood pressure medications, nonsteroidal anti-inflammatory drugs (NSAIDs), and some antidepressants. If you’ve started a new medication and notice unusual sun sensitivity, it’s worth having a conversation with your prescriber.

Who’s Most Vulnerable?

While the sun doesn’t discriminate, some people are more vulnerable to sun injury than others.

Skin tone matters enormously for UV-related injury. People with lighter skin have less melanin — the pigment that absorbs UV and dissipates it as heat, protecting underlying cells. Fair-skinned people sunburn faster and face a higher lifetime risk of skin cancer. That said, darker-skinned individuals are absolutely not immune: skin cancers in Black, Asian, and Hispanic patients tend to be diagnosed at later, more dangerous stages, partly because they’re less expected. Melanoma in particular has a much lower five-year survival rate in Black patients (around 70 percent) compared to white patients (around 95 percent).

Children deserve special attention. Their developing skin and eyes are more sensitive to UV damage, and the evidence is strong that severe sunburns during childhood and adolescence significantly increase the lifetime risk of melanoma. Generally, a disproportionate amount of a person’s lifetime UV exposure is accumulated before age 18.

For heat illness, the calculus shifts. The elderly and very young children are most vulnerable because their thermoregulatory systems are less efficient. People with chronic illnesses such as heart disease, kidney disease, diabetes, obesity, face elevated risk. So do people taking medications that interfere with sweating or fluid balance. Outdoor workers and athletes are at occupational risk, particularly when they haven’t had time to acclimatize to heat.

Prevention: The Real Work Happens Before You Go Outside

Sunscreen — But Use It Right

The evidence that sunscreen prevents skin cancer is solid overall, though the picture is more nuanced than the marketing suggests. High-quality evidence shows that regular daily use of a broad-spectrum SPF 15 sunscreen reduces the risk of developing squamous cell carcinoma by about 40 percent and reduces melanoma risk by roughly 50 percent. The catch is application. Under real-world conditions, people typically apply far less sunscreen than the amount used in lab testing which can cut the effective SPF roughly in half. Sunscreen also needs to be reapplied every two hours and after swimming or heavy sweating; most people don’t do this.

The American Academy of Dermatology recommends a broad-spectrum sunscreen (meaning it covers both UVA and UVB) with an SPF of at least 30 for everyday use, and SPF 50 for extended outdoor activity. ‘Broad spectrum’ is key — pure UVB filters leave you unprotected from UVA, which drives skin aging and contributes to skin cancer.

On the regulatory front, there’s encouraging news. In late 2025, Congress passed the SAFE Sunscreen Standards Act, which allows the FDA to accept safety data from other countries when evaluating new sunscreen ingredients. The U.S. has long lagged behind Europe and Asia in available sunscreen chemistry, so this could eventually broaden consumer options significantly.

Clothing and Shade

Arguably the most underrated sun protection strategy is also the simplest: cover up and get out of direct sun. Tightly-woven, loose-fitting clothing provides a meaningful physical barrier to UV. Clothing with a labeled UPF (ultraviolet protection factor) rating offers quantified protection. A wide-brimmed hat protects the face, ears, and neck — areas that accumulate a lot of UV exposure and are common sites for skin cancer.

Seek shade during peak UV hours, which run from about 10 a.m. to 4 p.m. Keep in mind that trees, umbrellas, and canopies reduce but don’t eliminate UV exposure — surfaces like sand, water, and snow reflect UV back at you from below, partially defeating the shade above you.

Eye Protection

Sunglasses that block 99 to 100 percent of UVA and UVB are very important and are not just a fashion accessory. Wraparound styles provide better coverage than narrow frames, since UV can reach the eye from the sides. For winter sports or high-altitude activities, glacier glasses or goggles with side shields are the appropriate choice — fresh snow can reflect up to 80 percent of UV radiation, and the UV intensity at altitude is substantially higher than at sea level.

Managing Heat Risk

Preventing heat illness comes down to a few fundamentals: stay hydrated before and during outdoor activity and don’t neglect to continue to hydrate after you have finished. Schedule strenuous work or exercise in the early morning or evening, wear lightweight and light-colored clothing, take breaks in shaded or air-conditioned spaces. Be sure to allow your body time to acclimatize when moving to a hotter climate — and that includes vacations.

Hydration specifics matter. The general guidance for outdoor exercise is to drink about 24 ounces of fluid two hours before activity, and about 8 ounces every 20 minutes during exertion — even if you don’t feel thirsty. When I was in the Marines and serving in a tropical environment, we were advised to “drink until you slosh”. In extreme heat, an electrolyte-containing sports drink can be more appropriate than plain water, since heavy sweating depletes sodium and other minerals that plain water doesn’t replace.

Never leave children, the elderly, or pets in a parked car on a warm day. Car interiors can reach dangerous temperatures remarkably quickly, and dark dashboards and seats can hit temperatures above 180°F.

Treatment: When the Sun Has Already Won

Treating Sunburn

There is no treatment that reverses UV damage once it’s occurred, so sunburn management is fundamentally about reducing inflammation and discomfort while the skin heals. Cool (not ice cold) baths or compresses help with pain and inflammation. Over-the-counter NSAIDs like ibuprofen or aspirin reduce inflammation systemically. Aloe vera gel and fragrance-free moisturizers help with the dryness and peeling that follow. Hydration is important, since burned skin loses water faster than intact skin.

Avoid applying petroleum jelly, butter, or any product that traps heat in the skin — these are folk remedies that can worsen the burn. Avoid further sun exposure until the burn has healed. Blistered burns should be left intact; breaking blisters increases infection risk. A severely blistered sunburn, or one accompanied by high fever, severe pain, confusion, or extensive skin involvement, warrants medical attention.

Treating Photokeratitis

Eye sunburn is treated with rest, darkness, and time. Remove contact lenses immediately. Cool compresses over closed eyes can ease the pain. Over-the-counter lubricating eye drops help with the irritation, and oral pain relievers can help with the deeper ache. Avoid rubbing the eyes. Most cases resolve within 24 to 48 hours. If pain or vision disturbance persists beyond 48 hours, or if vision changes occur, see an eye care professional promptly.

Treating Heat Exhaustion

Act quickly. Move the person to a cool or shaded area, loosen or remove excess clothing, and have them lie down with legs slightly elevated to improve circulation. Use any available means to cool the body: wet towels, fans, cool mist. Slowly give cool water or a sports drink. Call for medical assistance, since heat exhaustion can tip into heat stroke without warning.

Treating Heat Stroke

Heat stroke is a 911 emergency. While waiting for emergency services, move the person to a cool environment, remove outer clothing, and cool them by any means available — cool water applied to the skin, fanning, ice packs to the groin and armpits (where large blood vessels run close to the surface). Crucially: do NOT give fluids to someone who may have heat stroke, since confusion or impaired consciousness creates a choking risk. Hospital treatment typically involves intravenous fluids and active cooling measures. Every minute of delay increases the risk of permanent brain damage or death.

Long-Term Management: Skin Cancer

Skin cancer detected early is highly treatable. The American Academy of Dermatology recommends annual skin checks by a dermatologist for adults with significant sun exposure history, a personal or family history of skin cancer, or a large number of moles. Know the ABCDE warning signs: Asymmetry, irregular Border, uneven Color (especially multiple colors in one lesion), Diameter greater than a pencil eraser, and Evolution (any change in size, shape, or color over time). A new growth or a sore that doesn’t heal also warrants prompt evaluation.

A Final Thought

The sun isn’t going anywhere, and we wouldn’t want it to. But the injuries it causes — from the trivial to the fatal — are almost entirely preventable with a combination of awareness and habit. The frustrating reality is that the damage we’re preventing today won’t make itself known for years or decades. Nobody feels their melanoma forming at 35 or while they’re sitting on the beach at 22. That temporal gap is why sun safety behaviors are so psychologically difficult to maintain — the consequences feel abstract right up until they’re not.

The good news is that sunscreen, shade, adequate hydration, and protective clothing are not especially burdensome interventions. The return on that modest investment, measured in avoided skin cancers, avoided heat emergencies, and preserved eyesight, is substantial. Your future self will thank your present self for making it a habit.

Image generated by author using ChatGPT

Sources

Sunburn pathophysiology — PMC / ePlasty (2024) — https://pmc.ncbi.nlm.nih.gov/articles/PMC11374383/

UV radiation and human health — WHO Q&A — https://www.who.int/news-room/questions-and-answers/item/radiation-the-known-health-effects-of-ultraviolet-radiation

UV radiation and health effects — UNDRR — https://www.undrr.org/understanding-disaster-risk/terminology/hips/et0202

UV radiation and sun exposure — U.S. EPA — https://www.epa.gov/radtown/ultraviolet-uv-radiation-and-sun-exposure

Photokeratitis: causes, symptoms, treatment — All About Vision — https://www.allaboutvision.com/conditions/keratitis/photokeratitis/

Heat exhaustion — Cleveland Clinic — https://my.clevelandclinic.org/health/diseases/21480-heat-exhaustion

Heat stroke symptoms and treatment — WebMD — https://www.webmd.com/a-to-z-guides/heat-stroke-symptoms-and-treatment

Heat-related illnesses — CDC/NIOSH — https://www.cdc.gov/niosh/heat-stress/about/illnesses.html

Dehydration and heat stroke — Johns Hopkins Medicine — https://www.hopkinsmedicine.org/health/conditions-and-diseases/dehydration-and-heat-stroke

Heat illness — NOAA — https://www.noaa.gov/stories/heat-exhaustion-or-heat-stroke-know-signs-of-heat-illness

Skin cancer facts and statistics — Skin Cancer Foundation — https://www.skincancer.org/skin-cancer-information/skin-cancer-facts/

Skin cancer statistics — American Academy of Dermatology — https://www.aad.org/media/stats-skin-cancer

Sunscreen efficacy and skin cancer prevention — CMAJ (2020) — https://www.cmaj.ca/content/192/50/E1802

Modernizing U.S. sunscreen regulations — PMC (2025) — https://pmc.ncbi.nlm.nih.gov/articles/PMC12332967/

New sunscreen laws — Health Central (2026) — https://www.healthcentral.com/condition/skin-cancer/new-sunscreen-formulas-are-on-the-way

Sunscreen and melanoma risk — ASCO Journal of Clinical Oncology — https://ascopubs.org/doi/10.1200/JCO.2016.69.5874

Medical Disclaimer

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

The Gummy Revolution: Sweet Convenience or Health Trade-Off?

By John Turley

On May 22, 2026

In Medicine

A plain-language look at gummy vitamins and medications — the good, the bad, and the sticky

Not Your Grandma’s Vitamin

Walk down the supplement aisle of any pharmacy or big-box store and you’ll find row after row of brightly colored bottles filled with gummy bears, worms, and rings that smell vaguely of fruit punch. Decades ago, vitamins came in white tablets that tasted like chalk and left you feeling vaguely like you’d swallowed a piece of sidewalk. Today, a not-insignificant share of the American supplement market looks and tastes a whole lot like candy. That shift didn’t happen by accident, and understanding what’s driving it — and what it costs — is worth your time.

Gummy formulations now cover everything from vitamin C and melatonin to prenatal multivitamins and, increasingly, actual prescription-adjacent medications. The format has clear appeal, especially for children who resist pills and adults who find swallowing large tablets unpleasant or outright difficult. But behind that chewy exterior lies a more complicated picture involving sugar, unreliable dosing, dental damage, and real safety risks that most consumers never think about.

The Appeal Is Real

Let’s give credit where it’s due: the biggest genuine advantage of gummy vitamins isn’t nutritional — it’s behavioral. According to University Hospitals, the primary benefit of gummies over traditional supplements is people will take them more consistently. A vitamin sitting in your cabinet because you hate the taste is worthless. A gummy you look forward to, however modest its nutritional profile, at least does something. That’s not a trivial point.

For parents of young children, this is often a decisive factor. Getting a five-year-old to swallow a pill can feel like an Olympic sport. Gummies sidestep the fight entirely. And for elderly patients managing complex medication regimens, or anyone with a swallowing disorder (called dysphagia), gummies and chewables offer a useful alternative to pills and capsules.

There’s also a psychological dimension. Taking a gummy feels like a small reward rather than a medical obligation, and that association can make adherence to a supplement routine more sustainable. That may sound trivial, but in the real world of patient behavior, it matters.

Gummies may be gentler on the stomach than some traditional tablets because they lack certain binding agents and can sometimes be taken without food or large volumes of water, reducing nausea for sensitive users.

The popularity of gummy medications reflects a broader shift in medicine toward consumer-friendly products. Yet the fact that a medication tastes like candy does not make it harmless.

What’s in the Gummy?

Here’s where things start to get complicated. A standard gummy vitamin isn’t just vitamins. Its base is a blend of gelatin or pectin, corn starch, water, and — almost always — sugar or some form of sweetener. UCLA Health reports that most gummy vitamins contain between 2 and 8 grams of sugar per serving. The American Heart Association recommends no more than 25 grams of added sugar per day for women and 36 grams for men. That is a meaningful slice of a daily sugar budget, especially for someone taking multiple gummies.

The presence of all those filler ingredients — coloring, flavoring, gelling agents — creates a real-world engineering problem for manufacturers: there’s only so much space in a gummy bear. That means there is less room for actual vitamins and minerals.

Many gummy multivitamins leave out key minerals such as iron or zinc, or include them only in small amounts, because certain minerals affect taste or texture or are harder to formulate in a palatable gummy. As a result, relying solely on gummies may leave gaps compared with a well‑formulated tablet or capsule. As Cleveland Clinic notes, gummy vitamins typically contain fewer vitamins and minerals than regular vitamins, and it can be difficult to determine exactly how much nutrition you’re getting.

Sugar-free versions aren’t automatically off the hook either. Many use sugar alcohols like sorbitol or maltitol, which can cause bloating, gas, and diarrhea when consumed in any significant quantity. Others rely on high-sugar fruit juice concentrates that, while technically “no added sugar,” still deliver a meaningful glycemic hit.

The Sugar Problem — Beyond Calories

Your Teeth Are Paying the Price

The sugar content of gummy vitamins isn’t just a caloric issue — it’s a dental one, and it may be more damaging than eating equivalent sugar in another form. The reason comes down to the gelatin matrix. Dental researchers at Tufts University School of Dental Medicine explain that gummies carry roughly the same cavity risk as candy because sticky substances with sugar create oral health problems by lingering against tooth enamel far longer than liquids or even hard candies do.

When you eat ordinary sugary food, your saliva, tongue, and cheeks gradually help clear it away. Gelatin disrupts that process. It’s adhesive by design, that’s what makes gummies chewy rather than crumbly and it holds sugar against tooth surfaces far longer than normal. Bacteria in the mouth metabolize sugar and produce acids, which attack enamel in a process called demineralization. The result: an elevated risk of cavities that many never see coming because they’re thinking of these as health products, not candy.

Most gummy vitamins also contain citric acid, added for flavor. Citric acid softens enamel directly, creating a one-two punch: first the acid weakens the enamel, then the bacteria exploit the weakened surface. Brushing too soon after eating gummies can make things worse, since brushing acid-softened enamel can mechanically remove tooth structure. Dentists recommend rinsing with water immediately after chewing a gummy and waiting at least 30 minutes before brushing.

This is not a hypothetical concern. Pediatric dentists report seeing increased cavity rates in children whose parents switched to gummy vitamins as a supposedly healthier treat alternative. The irony — giving a child a health supplement that damages their teeth — is both real and under appreciated.

Diabetics, Diabetic-Adjacent, and Anyone Watching Sugar

For patients managing type 2 diabetes, pre-diabetes, metabolic syndrome, or insulin resistance, the sugar content of gummy vitamins isn’t just a dental annoyance — it’s a medication management issue. Taking multiple gummies daily, across different supplement categories (vitamin D, omega-3, calcium, melatonin, a multivitamin), can add up to a meaningful daily sugar load that was never accounted for in a dietary plan. Most people don’t track gummy sugar content the way they track the sugar in a soda, but they should.

The Dosing Problem Is Bigger Than You Think

What the Label Says vs What’s in the Bottle

Here’s a fact that should give anyone pause: gummy vitamins have a shorter shelf life than traditional pills and tablets, and the vitamins inside them degrade over time. To compensate, manufacturers sometimes overfill gummies at the time of production, meaning a freshly manufactured product may contain significantly more of a given vitamin than the label states, while an older product approaching its expiration date may contain considerably less.

The label on a gummy vitamin is, at best, a rough approximation. You might be getting 150% of what’s stated, or 60% of what’s stated, depending on when the product was manufactured and how long it sat on the shelf or in your cabinet. For most vitamins, this imprecision is inconvenient but not dangerous. For fat-soluble vitamins — specifically A, D, E, and K — it can become a genuine safety concern.

Unlike water-soluble vitamins such as C or the B vitamins, fat-soluble vitamins accumulate in the body’s fat tissue and liver rather than being excreted in urine. Consuming significantly more than your body needs over time can lead to toxicity. Vitamin A toxicity (hypervitaminosis A) can cause liver damage, bone loss, and a range of neurological symptoms. Vitamin D toxicity, while less common, can cause dangerously elevated calcium levels. The gummy format’s inherent dosing imprecision is most concerning precisely for the vitamins where precision matters most.

The Candy Problem and Accidental Overdose

Gummy vitamins taste like candy. They look like candy. Children cannot reliably distinguish them from candy, and the packaging is often designed with cartoon characters and bright colors that actively appeal to children. The predictable result: accidental ingestion. Poison control centers in the U.S. receive reports of over 60,000 vitamin toxicity events every year, and children under six account for the majority of those.

The FDA has taken notice. In late 2023, the agency convened a meeting of experts specifically to discuss the risks of candy-like nonprescription drug products, including gummy vitamins and OTC sleep aids. Among the concerns raised: packaging that uses cartoon characters and gummy worm shapes that blur the line between supplement and treat. Historically, a documented 500% spike in pediatric overdoses occurred in the late 1940s and early 1950s when drug companies began marketing kid-friendly aspirin and that was a less appealing format than gummies. History, it seems, may be repeating.

For households with young children, the safety implication is straightforward: gummy vitamins — regardless of how benign they may seem — should be stored exactly as any medication would be, in child-resistant containers and out of reach. The pleasant taste is precisely what makes them dangerous when a toddler finds them.

Regulatory Gaps and Quality Control

Supplements Aren’t Drugs

Let’s be clear about the regulatory landscape, because it matters more than most people realize. The FDA classifies dietary supplements — including gummy vitamins — as food items, not drugs. That means manufacturers don’t have to demonstrate safety and efficacy before bringing a product to market the way pharmaceutical companies do. The burden of proof is essentially reversed: the FDA must demonstrate that a product is unsafe before it can be pulled from shelves.

The practical consequences are significant. A gummy vitamin that claims to support immune health doesn’t have to prove that it does. A study analyzing supplements marketed for brain health and cognitive performance found that 83% contained compounds not listed on the label. Some contained prescription drug compounds. Heavy metals including lead, arsenic, cadmium, and mercury have been detected in dietary supplement products. Third-party testing exists (look for seals from NSF International, USP, or ConsumerLab), but it’s voluntary, and most products on the market haven’t been independently verified.

This isn’t an argument against supplements across the board — it’s an argument for educated consumption. If you or your physician have identified a specific nutritional deficiency, a targeted, independently verified supplement in a traditional tablet or capsule form will almost always deliver more reliable dosing than its gummy equivalent.

What about Prescription Gummies?

A growing number of prescription medications are being formulated as gummies or gummy-like chewables. The pharmaceutical industry sees significant potential in these products for pediatric and geriatric populations. However, prescription medications introduce additional challenges because many drugs require extremely precise dosing and predictable absorption characteristics. Compounded prescription gummies prepared by specialty pharmacies are already being marketed for conditions such as erectile dysfunction, sleep disorders, hormonal therapy, and hair loss. These require very specific prescriptions and many of these are not FDA-approved as finished pharmaceutical products, even though the active ingredients themselves may be FDA-approved.

Consumers should be cautious about products marketed online as “prescription gummies,” especially for weight loss, sexual enhancement, bodybuilding, or “natural” performance enhancement. The FDA has found hidden prescription drugs inside some supposedly “herbal” gummies. Several products sold as sexual-enhancement gummies were found to contain non- documented tadalafil, the active ingredient in Cialis. This can be dangerous, especially in patients taking nitrates or cardiac medications.

A Balanced Bottom Line

Gummy vitamins occupy a genuine and useful niche. For children who won’t take pills, for adults with swallowing difficulties, for patients who simply need a behavioral nudge to take something they’d otherwise skip — the gummy format serves a real purpose. Compliance is a legitimate medical outcome, and if the gummy gets someone to take their vitamin D consistently when they otherwise wouldn’t, that has value.

But gummies should be approached with clear eyes. They contain sugar — often more than people realize — and that sugar can damage teeth, complicate blood sugar management, and add up when multiple supplements are taken daily. Their dosing is inherently less precise than traditional formulations, a problem that grows more serious with fat-soluble vitamins that can accumulate to toxic levels. They pose a real accidental overdose risk in homes with children. And they exist in a regulatory environment that places the burden of quality assurance squarely on the consumer.

If you’re going to use gummies, the practical advice is consistent across medical sources: choose brands that have been independently third-party tested, keep them locked away from children, rinse your mouth with water after taking them, don’t substitute them for a meaningful medical intervention without your doctor’s input, and be especially cautious with fat-soluble vitamin gummies where dosing precision matters most. And if you’re taking them alongside prescription medications, tell your doctor — interactions and supplement contamination are real, if underappreciated, risks.

The gummy revolution isn’t going anywhere. The market is too large and the convenience too appealing. But the best version of that revolution is one where consumers understand what they’re actually putting in their mouths.

Image generated by author using ChatGPT.

Sources

1. WebMD — Gummy Vitamins: What to Know. https://www.webmd.com/vitamins-and-supplements/what-to-know-about-gummy-vitamins

2. UCLA Health — Should You Take Gummy Vitamins? https://www.uclahealth.org/news/article/should-you-take-gummy-vitamins

3. University Hospitals — Are Gummy Vitamins as Good as the Real Thing? https://www.uhhospitals.org/blog/articles/2026/01/are-gummy-vitamins-as-good-as-the-real-thing

4. Cleveland Clinic — Do Gummy Vitamins Work as Well as Traditional Vitamins? https://health.clevelandclinic.org/do-gummy-vitamins-work-as-well-as-traditional-vitamins

5. Ochsner Health — Are Gummy Vitamins Effective or Just a Sweet Treat? https://blog.ochsner.org/articles/are-gummy-vitamins-healthy/

6. Scripps Health — Do Gummy Vitamins Really Work? https://www.scripps.org/news_items/7270-do-gummy-vitamins-really-work

7. Healthline — Are Gummy Vitamins Good or Bad? https://www.healthline.com/nutrition/gummy-vitamins

8. MedShadow Foundation — Dangers of Gummy, Patch, and Powder Vitamin Supplements. https://medshadow.org/integrative-health/non-drug-supplements/dangers-of-gummy-patch-and-powder-vitamin-supplements/

9. STAT News — The FDA Weighs the Risks of Candy-Like Nonprescription Drugs. https://www.statnews.com/2023/10/30/candy-like-drugs-gummies-fda-halloween-eve/

10. FDA — Dietary Supplements: Questions and Answers. https://www.fda.gov/consumers/consumer-updates/fda-101-dietary-supplements

11. Tufts University School of Dental Medicine — Something to Chew On Before You Sink Your Teeth into Those Gummy Vitamins. https://now.tufts.edu/2024/07/25/something-chew-you-sink-your-teeth-those-gummy-vitamins

12. SingleCare — What Happens If You Eat Too Many Gummy Vitamins? https://www.singlecare.com/blog/too-many-gummy-vitamins/

13. GoodRx — Can You Overdose on Vitamins? https://www.goodrx.com/well-being/supplements-herbs/overdose-on-vitamins

Medical Disclaimer

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Keeping Things Moving: Bowel Health for Seniors

By John Turley

On May 11, 2026

In Medicine

Introduction

Let’s talk about something that affects nearly a third of all older adults but rarely makes it into polite dinner conversation: bowel movements. Specifically, how often should you be having them, what happens when you don’t, and what can you do about it. This isn’t exactly cocktail party material, but it matters, a lot, for your comfort, your health, and your overall quality of life.

Constipation is extraordinarily common in people over 60. Some estimates put the rate of chronic constipation as high as 30% in community-dwelling older adults, and it climbs up to 50% among nursing home residents. Yet it remains under-discussed, under-treated, and frequently dismissed as just a normal part of getting older. Spoiler alert: it isn’t.

What Is a “Normal” Bowel Movement Schedule for Seniors?

Here’s a liberating fact: there is no single right answer to how often you should go. The notion that everyone should have a bowel movement every day is a myth. The accepted medical range for normal stool frequency is anywhere from three times a day to three times a week. If you’re comfortable, there’s no straining, and nothing has dramatically changed from your usual pattern, you’re probably fine.

For most seniors, having a bowel movement once a day to three times a week falls within the typical range. The key phrase here is “typical for you.” What matters clinically is consistency and comfort, not hitting some magic daily number.

A large National Health Interview Survey of over 42,000 participants found something that surprises many people: infrequent bowel movements don’t automatically increase with age the way conventional wisdom has long assumed. As the researchers noted in the Annals of Internal Medicine, a decline in bowel movement frequency is “not an invariable concomitant of aging.”

So what does change with age? The colon can slow its transit time — the speed at which food waste travels from one end to the other. Muscle tone in the abdomen and pelvic floor may decrease. Nerve sensitivity in the rectum can diminish, meaning you may not feel the urge to go as acutely as you once did. Add reduced physical activity, inadequate fluid intake, and a roster of medications, and you have a recipe for sluggishness down below.

Harvard Health recommends paying attention to any dramatic departure from what’s normal for you. If you typically go once a day and suddenly you’re going once a week without an obvious explanation like a change in diet or travel, that’s worth discussing with your doctor. Especially if it comes with fatigue, pain, unintentional weight loss, blood in the stool, or a change in consistency.

The Downside of Infrequent Bowel Movements

Constipation might seem like just an inconvenience, but when it becomes chronic or severe, the consequences can be surprisingly serious. Here’s a rundown of what can go wrong.

Fecal Impaction

The most dangerous complication of untreated chronic constipation is fecal impaction — when hardened stool becomes lodged in the colon or rectum and simply cannot pass. This is a genuine medical emergency. In the UK, fecal impaction has been identified in about 40% of hospitalized older patients. What makes it particularly tricky is that it can masquerade as diarrhea: liquid stool from above the blockage leaks around the impaction, creating what’s called overflow incontinence. If left untreated, impaction can cause intestinal obstruction, ulceration of the bowel wall, and even perforation and these can be life-threatening.

Hemorrhoids and Anal Fissures

Chronic straining on the toilet puts enormous pressure on the veins around the rectum, which can produce hemorrhoids — swollen, painful, and sometimes bleeding. Hard stools can also cause small tears called anal fissures, which are painful and can bleed with each bowel movement. These aren’t just uncomfortable; they can signal that something needs to change.

Quality of Life

Don’t underestimate how much chronic constipation chips away at daily life. Studies using validated quality-of-life instruments have consistently found that constipated older adults score lower on measures of physical functioning, mental health, general health perception, and management of bodily pain. Some studies even found improvements in mood and depression once constipation was successfully treated. This is not a trivial problem.

Confusion and Cognitive Effects

In older adults, particularly those with dementia, unresolved constipation can contribute to confusion, agitation, and behavioral changes. Clinicians who work in geriatrics are trained to consider constipation when an older patient with cognitive impairment suddenly becomes more agitated or confused. It’s one of those connections that surprises non-clinicians but is well recognized in eldercare.

A Note on Red Flags

It bears repeating, new, unexplained constipation, especially in an older adult who hasn’t had it before, deserves medical evaluation. Colon cancer, among other serious conditions, can present as a change in bowel habits. Blood in the stool, unexplained weight loss, iron-deficiency anemia, or a family history of colorectal cancer are all signals to see your doctor promptly rather than reaching for a laxative.

Non-Pharmacological Approaches

Good news: there’s a lot you can do before opening the medicine cabinet. Lifestyle measures are always considered first-line therapy, and for many people, they’re enough.

Fiber Intake

Dietary fiber is the single most important nutritional factor in maintaining regular bowel movements. Fiber adds bulk to stool and helps it move through the colon more efficiently. Whole grains, fresh fruits, vegetables, legumes, dried fruits like prunes, figs, and apricots are all solid choices. Prune juice, in particular, contains sorbitol, a natural sugar that acts as a mild laxative (but I have to admit, it’s not my favorite). Some healthcare providers recommend a simple homemade mixture of equal parts prune juice, chopped prunes, applesauce, and wheat bran, starting with one tablespoon a day and working up to four (again, not my go-to breakfast).

One caution: add fiber gradually. Ramping up too fast can cause bloating and gas, which discourages people from sticking with it. Slow and steady works better here.

Hydration

Without adequate fluid, stool dries out and becomes harder to pass. Mayo Clinic recommends 8 to 10 eight-ounce glasses of non-caffeinated fluids daily. This is especially important if you’re taking a fiber supplement, which needs water to do its job properly. Admittedly, this can be a real challenge for some people.

Physical Activity

Exercise stimulates the gut. Even light walking helps move things along, and the CDC recommends that seniors aim for about 30 minutes of cardiovascular exercise on most days, with a mix of muscle and bone-strengthening activities. The Nurses’ Health Study, which followed over 62,000 women, found that physical activity two to six times per week was associated with a 35% lower risk of constipation.

Scheduled Toileting

Taking advantage of the body’s natural gastrocolic reflex — the wave of colonic contractions triggered by eating — is a simple but effective strategy. Sitting on the toilet 15 to 30 minutes after a meal, particularly breakfast, can help train the bowel to move on a regular schedule. This is one of the most underutilized, zero-cost interventions in geriatric care.

Toilet Positioning

A simple footstool placed under the feet while on the toilet can make a meaningful difference. Raising the knees above hip level — mimicking a squatting position — straightens the angle between the rectum and the anus, making stool easier to pass. Some patients find this makes a real difference in comfort and completeness of evacuation.

Privacy and Routine

This one sounds almost too simple, but it matters: many older adults, particularly those in assisted living or with mobility limitations, feel rushed, embarrassed, or lack adequate privacy when trying to have a bowel movement. Stress and anxiety directly suppress gut motility. Ensuring that someone has enough time, privacy, and a comfortable setting is a legitimate therapeutic intervention, especially in care facility settings.

Biofeedback Therapy

For seniors whose constipation stems from difficulty coordinating the pelvic floor muscles — a condition called dyssynergic defecation — biofeedback therapy can be a game-changer. It uses electronic sensors and visual or auditory feedback to help patients learn to relax the correct muscles during a bowel movement. It’s non-invasive, has no side effects, and is particularly well-suited for people whose constipation hasn’t responded to diet and laxatives.

Pharmacological Approaches

When lifestyle changes aren’t enough and sometimes, they’re not, a range of medications are available, from gentle over-the-counter options to prescription treatments for stubborn cases. Here’s how they generally stack up, from mildest to strongest.

Fiber Supplements (Bulk-Forming Agents)

Products like psyllium (Metamucil), methylcellulose (Citrucel), and polycarbophil (FiberCon) work by absorbing water and adding bulk to stool, making it easier to pass. They’re generally safe for long-term use and are typically the first pharmaceutical step. The key is taking them with plenty of water; without adequate fluid, they can worsen constipation.

Stool Softeners

Docusate sodium (Colace) works by allowing water and fats to penetrate the stool, making it softer and easier to pass. It’s commonly used in post-surgical patients or anyone who needs to avoid straining — for example, after a heart attack or hemorrhoid surgery. It’s gentle and generally well tolerated, though evidence for its effectiveness as a standalone constipation treatment is modest.

Osmotic Laxatives

Polyethylene glycol — sold as MiraLAX — is widely considered the preferred osmotic laxative for older adults. It works by drawing water into the colon, softening the stool and stimulating movement. It’s tasteless, mixes easily into beverages, and has a favorable safety profile compared to alternatives like lactulose (which can cause bloating and gas) or magnesium-based products (which should be used cautiously in people with kidney disease). Daily use of PEG is considered safe and is quite common in geriatric practice. This is my personal option.

Milk of Magnesia (magnesium hydroxide) is another osmotic option that works well for many people, but should be used cautiously in anyone with impaired kidney function, as magnesium can accumulate and cause toxicity.

Stimulant Laxatives

Bisacodyl (Dulcolax) and senna (Senokot) work by stimulating nerve endings in the colon wall, triggering muscle contractions that push stool along. They’re effective but generally recommended for short-term use rather than daily reliance, due to concerns about dependency and potential effects on colon muscle function over time — though evidence on long-term harm is less alarming than once believed.

Suppositories and Enemas

For more immediate relief — or when oral treatments haven’t worked — glycerin or bisacodyl suppositories can sometimes trigger a bowel movement within minutes. Warm water or mineral oil enemas are typically reserved for fecal impaction. These are short-term rescue measures rather than ongoing management tools and should only be used with medical supervision.

Prescription Medications

For seniors with chronic constipation that doesn’t respond to over-the-counter options, several prescription medications have been approved. Linaclotide (Linzess) increases intestinal fluid secretion and gut motility; studies have included patients up to age 86 and demonstrated increased bowel movement frequency. Lubiprostone (Amitiza) works similarly. For patients on opioid pain medications whose constipation is directly caused by those drugs, a class of medications called peripherally acting mu-opioid antagonists — including methylnaltrexone (Relistor) and naloxegol (Movantik) — can counteract the constipating effects of opioids without reducing their pain-relieving benefits.

A Note on Medications That Cause Constipation

It’s worth pausing here to note that many medications commonly prescribed to older adults are themselves a major cause of constipation. Opioid pain medications are the biggest culprits, but the list also includes calcium channel blockers (used for blood pressure and heart conditions), certain antidepressants, antipsychotics, antihistamines, iron supplements, and some antihypertensives. If constipation is a new or worsening problem, a medication review with your doctor is one of the most productive first steps.

The Bottom Line (Sorry about the pun)

Bowel health in older adults is more nuanced than many people realize. “Normal” varies from person to person, and the goal isn’t to hit a daily number on a checklist — it’s to maintain whatever is comfortable and consistent for you, without pain or straining. When that starts to slip, you should take it seriously rather than dismissing it as just part of getting older.

The hierarchy of treatment is straightforward: start with lifestyle — fiber, fluids, exercise, and toileting routine. If that’s not enough, move to gentle over-the-counter options like fiber supplements and MiraLAX. If those don’t work, a physician can guide more targeted approaches, including prescription medications or biofeedback therapy.

And always, always tell your doctor about changes in your bowel habits — especially if they come with blood, pain, or weight loss. Your gut has a lot to say, and it’s worth listening.

Illustration generated by author using ChatGPT.

Sources

· PubMed / Annals of Internal Medicine — Bowel habit in relation to age and gender (National Health Interview Survey, 42,375 subjects) https://pubmed.ncbi.nlm.nih.gov/8572842/

· Mayo Clinic Community Health — Bowel habits as you age https://communityhealth.mayoclinic.org/featured-stories/bowel-habits-aging

· Harvard Health — Staying Regular https://www.health.harvard.edu/healthy-aging-and-longevity/staying-regular

· National Institute on Aging (NIH) — Concerned About Constipation? https://www.nia.nih.gov/health/constipation/concerned-about-constipation

· PubMed Central — Chronic Constipation in the Elderly Patient: Updates in Evaluation and Management https://pmc.ncbi.nlm.nih.gov/articles/PMC7272371/

· PubMed Central — Update on the Management of Constipation in the Elderly: New Treatment Options https://pmc.ncbi.nlm.nih.gov/articles/PMC2920196/

· PubMed Central — Constipation in Older Adults: Stepwise Approach to Keep Things Moving https://pmc.ncbi.nlm.nih.gov/articles/PMC4325863/

· HealthInAging.org — Caregiver Guide: Constipation Problems https://www.healthinaging.org/tools-and-tips/caregiver-guide-constipation-problems

· American Academy of Family Physicians (AAFP) — Management of Constipation in Older Adults (2015) https://www.aafp.org/pubs/afp/issues/2015/0915/p500.html

· American Academy of Family Physicians (AAFP) — Treatment of Constipation in Older Adults (2005) https://www.aafp.org/pubs/afp/issues/2005/1201/p2277.html

· Better Health While Aging — Constipation Treatment & Best Laxatives in Aging https://betterhealthwhileaging.net/how-to-prevent-and-treat-constipation-aging/

· Medical Daily — Chronic Constipation in Seniors: Complete Guide to Causes, Risks, and Safe Treatment Options https://www.medicaldaily.com/chronic-constipation-seniors-complete-guide-causes-risks-safe-treatment-options-474499

Illustration generated by author using ChatGPT

Medical Disclaimer

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Cold Plunging: Real Physiology, Real Risks, and a Whole Lot of Hype

By John Turley

On May 4, 2026

In Medicine

Cold plunge tubs are popping up everywhere — gyms, spas, suburban backyards, and increasingly in high-end wellness retreats. Influencers post videos of themselves lowering into icy water with overly dramatic grimaces. Podcasters talk enthusiastically about dopamine surges and mental clarity. Biohackers track immersion times with the seriousness of laboratory researchers.

I have always been skeptical of what I call “fad medicine,” but cold plunging has become so widespread that it warrants a closer, more careful look. The question most people want answered is a simple one: is any of this real, is it at least minimally beneficial, or is it just expensive discomfort dressed up in scientific language?

The most honest answer is that it is a mix of all three. Some of the claims are grounded in solid physiology. Some are intriguing but still preliminary. And some have clearly outpaced the available evidence.

Cold-water immersion, often abbreviated as CWI, does have some legitimate scientific literature behind it. That said, the body of research is smaller, more recent, and less definitive than popular wellness culture would suggest. What follows is an attempt to separate what is known from what is plausible, what remains largely speculative, and what may be downright dangerous.

Long before cold plunging became a modern wellness trend, it existed as a long-standing human practice. References to cold water therapy appear in Egyptian medical texts dating back several thousand years. The Greek physician Hippocrates recommended cold water for pain relief and fatigue. Even Thomas Jefferson was said to have soaked his feet in cold water every morning for decades, believing it contributed to his health. The practice itself is not new but the attempt to study it systematically is.

For much of modern medical history, research on cold exposure focused primarily on its dangers—hypothermia, cardiac stress, and survival in extreme environments. Only in recent years has attention shifted toward possible benefits, driven largely by the explosion of public interest and researchers have acknowledged that the science is still catching up.

When it comes to physical effects, the strongest evidence relates to muscle recovery. Cold-water immersion has been shown to reduce soreness following intense exercise. The mechanism is relatively well understood. Exposure to cold causes blood vessels to constrict, which limits swelling and reduces inflammatory signaling. When normal circulation returns, metabolic byproducts are cleared more efficiently from muscle tissue. This is why athletes have relied on ice baths for decades.

However, this benefit comes with an important caveat. The same processes that reduce inflammation may also interfere with the body’s ability to adapt to strength training. Some studies suggest that regular cold exposure immediately after resistance exercise can blunt the molecular signals responsible for muscle growth. In practical terms, what helps you feel better in the short term may limit gains over the long term. For endurance athletes, this effect appears less pronounced, but for individuals focused on building strength and muscle mass, it is a meaningful consideration.

Cold exposure also has immediate and dramatic effects on the cardiovascular system. Immersion in cold water triggers what is often referred to as the “cold shock” response. Heart rate increases rapidly, blood pressure rises, and blood vessels in the skin constrict sharply, redirecting blood toward the body’s core. This is a powerful physiological stressor. Interestingly, once the body begins to recover, there is often a shift toward increased parasympathetic activity — the branch of the nervous system associated with rest and recovery. This shift is sometimes reflected in improved heart rate variability, a marker that correlates with cardiovascular resilience.

Observational studies of habitual cold-water swimmers suggest improvements in certain cardiovascular risk markers, including lipid profiles and oxidative stress. At the same time, it is important to recognize that even in well-adapted individuals, cold immersion still increases cardiac workload. The potential benefits and risks are not separate; they occur simultaneously. Whether long-term adaptation outweighs repeated short-term stress is still an open question.

Another frequently discussed area involves metabolism, particularly the activation of brown adipose tissue, or “brown fat.” Unlike white fat, which stores energy, brown fat burns energy to generate heat. Cold exposure stimulates this process, and some studies suggest it may improve insulin sensitivity and metabolic efficiency. A 2024 review published in GeroScience highlighted the possibility that cold exposure could reduce cardiometabolic risk. However, most of these studies are small and conducted under controlled conditions that may not reflect real-world behavior. While the findings are promising, they are not yet strong enough to support broad clinical recommendations.

More recently, researchers have begun exploring cellular-level effects. A 2025 study from the University of Ottawa found that repeated cold exposure influenced processes such as autophagy and apoptosis, which are involved in cellular repair and turnover. These mechanisms are often associated with aging and longevity. While the findings are intriguing, they were observed in a limited population and over a short time frame. At this stage, they represent an interesting possibility rather than a definitive conclusion.

The mental and emotional effects of cold plunging are perhaps the most widely discussed and the least clearly understood. Cold exposure triggers a surge in neurotransmitters, particularly norepinephrine and dopamine. These chemicals are associated with alertness, focus, and the experience of reward. Many individuals report feeling energized, clear-headed, and even euphoric after a cold plunge.

The key question, however, is whether these short-term effects translate into lasting improvements in mental health. Current evidence suggests that while immediate mood elevation is real, long-term benefits are less certain. Systematic reviews have found that the evidence for sustained reductions in anxiety or depression is inconclusive. It is also worth noting that some of the perceived benefit may reflect a placebo effect, which, while real, complicates interpretation.

There is somewhat stronger evidence supporting short-term stress reduction. Cold exposure acts as a controlled stressor, forcing the body to adapt. This concept, known as hormesis, suggests that small, manageable stressors can enhance resilience over time. Some studies have found that cold-water immersion is associated with reduced stress levels, improved sleep, and enhanced subjective well-being for several hours following exposure. However, these effects appear to be time-limited, and it is not yet clear whether they accumulate in a meaningful way over longer periods.

Claims regarding immune function are among the most popular and the least substantiated. A frequently cited study reported that individuals who took cold showers experienced fewer sick days. However, cold showers are not the same as full immersion, and reduced absenteeism is not a direct measure of immune performance. Studies examining cold-water immersion have produced inconsistent results. Some show changes in immune markers, while others do not. Most focus on laboratory measurements rather than actual illness outcomes. At present, the evidence for immune enhancement remains inconclusive.

For older adults, the picture becomes more complex. Aging affects the body’s ability to regulate temperature. The capacity to generate heat declines, sensitivity to cold may be reduced, and chronic conditions or medications can further impair thermoregulation. What might be an invigorating experience for a younger individual can pose a genuine risk for someone in their later decades.

This does not mean cold exposure is entirely off the table, but it does mean the approach must be modified. Milder temperatures, shorter durations, and greater caution are essential. The margin for error is smaller, and symptoms such as dizziness, confusion, or irregular heartbeat may be delayed. The risk-benefit balance shifts noticeably with age.

There are also groups for whom cold plunging is best avoided altogether. Individuals with cardiovascular disease, particularly those with arrhythmias or a history of heart attack, face increased risk due to the sudden cardiovascular stress. People with peripheral vascular disease or Raynaud’s phenomenon may experience harmful levels of vasoconstriction. Those with diabetes and neuropathy may have impaired sensation and circulation, increasing the risk of injury. Individuals with respiratory conditions such as severe asthma may be vulnerable to cold-induced bronchospasm. Additional caution applies to those with rare conditions such as cold urticaria or cryoglobulinemia, as well as anyone recovering from recent surgery.

It is important to acknowledge what the evidence does not support. Claims that cold plunging significantly slows aging are not backed by clinical data. The idea that it produces long-term immune enhancement remains unproven. Even the metabolic benefits, while biologically plausible, appear modest and context-dependent.

Another challenge is the lack of standardization in the research itself. Studies vary widely in water temperature, duration of exposure, frequency, and participant characteristics. This makes it difficult to compare results or draw firm conclusions. In many cases, researchers are effectively studying different interventions under the same label.

The bottom line is that cold plunging is neither a miracle cure nor pure nonsense. It produces real physiological effects, some of which are beneficial, particularly in the context of athletic recovery. For healthy individuals, it may offer short-term improvements in mood, stress, and perceived well-being. At the same time, its long-term benefits remain uncertain, and its risks are not trivial for certain populations.

For those who are curious and in good health, a gradual and cautious approach may be reasonable. Starting with cool water and progressing slowly allows the body to adapt while minimizing risk. A visit with a physician is still advised before starting any new regimen.

For individuals with underlying medical conditions, particularly cardiovascular disease, the prudent course is to consult a physician before attempting any cold water immersion.

Cold plunging clearly does something. The challenge is that we are still in the early stages of understanding exactly what that “something” is, how durable it may be, and for whom it is most appropriate. In medicine, that places it in a familiar category—an intervention that is interesting, potentially useful, possibly harmful in some cases, but not yet fully defined.

Illustration generated by author using ChatGPT.

Sources

1. Effects of cold-water immersion on health and wellbeing: A systematic review and meta-analysis — PLOS One (2025)

2. Cold-water plunging health benefits — Mayo Clinic Health System (2024)

3. Cold plunges: Healthy or harmful for your heart? — Harvard Health (2025)

4. The untapped potential of cold water therapy for healthy aging — PMC / GeroScience (2024)

5. Health effects of voluntary exposure to cold water — PMC / Int J Circumpolar Health (2022)

6. Cold plunges actually change your cells — ScienceDaily / University of Ottawa (2025)

7. The health benefits (and risks) of cold plunges — Advisory Board (2025)

8. What are the health benefits of a cold plunge? Scientists vet the claims — NPR (2023)

9. The benefits of cold-water immersion therapy — UF Health Jacksonville (2024)

10. Cold and longevity: Can cold exposure counteract aging? — ScienceDirect (2025)

11. Ice bath for seniors: Safety and age-appropriate cold therapy — PlungeChill (2025)

12. What seniors should know before trying a cold plunge — SilverSneakers (2025)

13. Ice baths over 50, according to a geriatrician — Parade (2023)

14. Ice baths and saunas: Are the latest health trends bad for your lungs? — American Lung Association

15. Sauna and cold plunge for seniors 60+: Safe protocols guide 2026 — Calore Health

16. Cold plunge benefits, risks, and who should avoid — Dr. Axe (2024)

Medical Disclaimer

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Gluten and Your Gut: Celiac Disease, Sensitivity, and the Gluten-Free Craze.

By John Turley

On April 30, 2026

In Medicine, Science

Walk down the aisles at any grocery store today and you’ll find bread, crackers, cereals, and pastas proudly stamped “Gluten-Free” — as if gluten were some kind of dietary villain lurking in your morning toast. For the roughly 1% of Americans with celiac disease, avoiding gluten isn’t a lifestyle choice; it’s a medical necessity. But for the much larger slice of the population without any gluten-related disorder, the science tells a more complicated story.

What Is Celiac Disease, and What Causes It?

Celiac disease is an autoimmune disorder — meaning the immune system turns on the body itself. The trigger is gluten, a protein found in wheat, barley, and rye. Gluten fragments interact with an enzyme called tissue transglutaminase in the gut. The immune system mistakes this complex for a threat and attacks it, but in the process, it damages the body’s own intestinal tissue. This is what makes celiac disease an autoimmune condition, rather than a simple food allergy. The immune system mounts an attack, generating antibodies that damage the villi, the tiny finger-like projections lining the small intestine that are responsible for absorbing nutrients. Over time, that damage leads to malabsorption and a cascade of health problems.

The disease has a strong hereditary component — about 7.5% of close relatives of people with celiac disease also have it. Researchers have identified two specific genetic variants, HLA-DQ2 and HLA-DQ8, that are present in virtually all celiac patients. But here’s the catch: about 40% of the general population carry one of these genes, yet most of them never develop celiac disease. That means genes load the gun, but something else pulls the trigger. Environmental factors — gastrointestinal infections, timing of gluten introduction in infancy, and other autoimmune conditions like type 1 diabetes and thyroid disease, surgery, even pregnancy — all appear to play a role. Researchers continue to study why some genetically susceptible individuals develop the disease while others do not.

Symptoms and Diagnosis: A Tricky Puzzle

If you’re picturing someone doubled over with stomach pain after eating a sandwich, that’s one version of celiac disease — but far from the only one. The disease presents in more than 200 documented ways. Classic gut symptoms include abdominal pain, bloating, diarrhea, and foul-smelling stools. But celiac disease can also show up as iron-deficiency anemia, bone loss, infertility, nerve damage, depression, liver enzyme abnormalities, and even a distinctive itchy skin rash called dermatitis herpetiformis. Children may experience stunted growth and delayed puberty. Some people, especially seniors, may have no obvious symptoms at all.

This symptom diversity is part of why diagnosis is so often delayed. Researchers estimate that somewhere between 60–70% of Americans with celiac disease remain undiagnosed.

The path to diagnosis typically starts with a blood test measuring tissue transglutaminase IgA antibodies — a marker the immune system produces in response to gluten. If that test is positive, a gastroenterologist performs an upper endoscopy and takes small tissue samples from the small intestine to look for the telltale villous damage under a microscope. Both tests need to be done while the patient is still eating gluten; going gluten-free first can produce falsely normal results and delay or prevent an accurate diagnosis.

Treatment: One Answer, Lifelong Commitment

There are no medications, no injections, no surgical fixes for celiac disease. The only effective treatment is a strict, lifelong gluten-free diet. And “strict” really does mean strict — even trace amounts of gluten can damage the intestinal lining, sometimes without producing obvious symptoms. Gluten hides in surprising places: commercial soups, sauces, ice cream, hot dogs, medications, dietary supplements, and even some communion wafers. Working with a registered dietitian is strongly recommended.

The good news is that the intestinal lining is remarkably resilient. Once gluten is eliminated, symptoms typically improve within one to two weeks, and mucosal healing generally follows over one to two years. Nutritional deficiencies — commonly iron, folate, calcium, and B vitamins — are addressed with supplements during recovery. A small subset of patients develop “refractory celiac disease,” where the intestine doesn’t heal despite strict dietary adherence; these cases may require corticosteroids and carry a less favorable prognosis.

Prognosis: Life After Diagnosis

Most people with celiac disease who strictly follow a gluten-free diet do very well over the long term. Intestinal architecture normalizes, antibody levels drop, and many of the downstream complications — anemia, bone loss, neurological symptoms — improve or resolve. The earlier the diagnosis is made and the gluten-free diet is initiated, the better the outcome.

One significant concern on the long-term horizon is cancer risk. People with longstanding, untreated celiac disease face a roughly 6–8% elevated risk of lymphoma of the small intestine. There is also a modestly increased risk of other gastrointestinal cancers. The reassuring part: patients who achieve normal intestinal histology on a gluten-free diet appear to have the same lymphoma risk as the general population. Adherence to the diet is, quite literally, protective.

Non-Celiac Gluten Sensitivity: The Gray Zone

Between full-blown celiac disease and perfectly healthy gluten tolerance lies a murkier territory: non-celiac gluten sensitivity (NCGS). People with NCGS experience symptoms similar to celiac disease — bloating, abdominal pain, fatigue, headaches, brain fog — after eating gluten, but their blood tests for celiac antibodies are negative and intestinal biopsies show no structural damage. The condition is real and increasingly recognized, but its biology remains incompletely understood.

Non‑celiac gluten sensitivity does not have a single definitive test. Instead, it is a diagnosis of exclusion. Once all other causes have been excluded, NCGS is what’s left.

Milder Forms of Gluten Intolerance

Not everyone with gluten‑related complaints fits neatly into the categories above. Some people never undergo formal testing but notice a pattern: when they eat bread, pasta, or pastries, they just don’t feel good. When they cut back on those foods, they feel lighter and more energetic.

These milder forms of gluten intolerance can be tricky to interpret. The symptoms overlap with irritable bowel syndrome, lactose intolerance, stress‑related gut issues, and reactions to FODMAPs (fermentable carbohydrates) found in wheat and many other foods. In some cases, it may not be gluten itself causing problems but the overall carbohydrate profile of a highly processed, wheat‑heavy diet. Some scientists suggest renaming the condition “non-celiac wheat sensitivity” to better capture this complexity. Still, for the individual, what matters most is whether changing their diet in a structured way leads to sustained relief.

Wheat allergy is a classic IgE‑mediated food allergy to wheat proteins that can cause hives, wheezing, or even anaphylaxis, and needs to be distinguished from celiac disease and NCGS. It is treated like other food allergies and is best managed by an allergist.

The Gluten-Free Craze: Helpful Trend or Expensive Fad?

Here’s where things get interesting — and a little frustrating for nutritional scientists. Surveys suggest that roughly 30% of American adults are actively trying to reduce or eliminate gluten from their diets. A 2013 poll found that 65% of Americans believed gluten-free foods were simply healthier, and 27% thought going gluten-free would help them lose weight. These numbers vastly outpace the actual prevalence of celiac disease and gluten sensitivity combined.

What does the science actually say? For people without celiac disease, NCGS, or a wheat allergy, there’s no compelling evidence that a gluten-free diet improves health, reduces inflammation, boosts athletic performance, or prevents disease. A large 2017 study of over 100,000 participants without celiac disease found no association between long-term gluten consumption and heart disease risk — and in fact suggested that gluten-avoiders who cut back on whole grains might be inadvertently increasing their cardiovascular risk through lower dietary fiber and an increase in refined starches, sugars and fats in gluten substitutes.

There’s also a nutritional downside worth considering. Gluten-free processed foods — the breads, pastas, crackers, and cookies filling grocery shelves — are often lower in fiber, iron, zinc, B vitamins, and folate than their conventional counterparts. They tend to be higher in sugar and fat to compensate for gluten’s structural role. And they’re almost always more expensive.

On the other hand, for some people, adopting a gluten‑free pattern coincides with broader healthy changes—more fruits, vegetables, and home‑cooked meals—so perceived benefits may come from overall diet quality rather than gluten removal itself.

The bottom line from Harvard Medical School is clear: if you feel well and have no digestive symptoms, there’s no evidence that a gluten-free diet will help, and some modest evidence it might hurt.

That said, if you’re experiencing real, persistent gut symptoms and haven’t been evaluated, the right move isn’t to quietly go gluten-free and see if you feel better — it’s to see a doctor and get tested first. Eliminating gluten before testing can produce falsely negative results and close the diagnostic door on a condition that, left untreated, carries genuine long-term risks.

The Takeaway

Celiac disease is a serious autoimmune condition affecting about 1% of the population, with the majority still undiagnosed. It requires strict, permanent gluten avoidance and careful medical follow-up. Non-celiac gluten sensitivity occupies a legitimate but scientifically murkier space, affecting a real but incompletely defined group of people for whom reducing gluten makes practical sense. For everyone else — the majority of gluten-free shoppers — the science doesn’t support the hype. Gluten itself isn’t the villain; it’s just a protein. The real story is in the individual biology of those who can’t tolerate it.

Illustration generated by author using ChatGPT.

Sources:

· WebMD — Celiac Disease: Symptoms, Causes, and Treatment https://www.webmd.com/digestive-disorders/celiac-disease/celiac-disease

· Merck Manual (Consumer Version) — Celiac Disease https://www.merckmanuals.com/home/digestive-disorders/malabsorption/celiac-disease

· Merck Manual (Professional Edition) — Celiac Disease https://www.merckmanuals.com/professional/gastrointestinal-disorders/malabsorption-syndromes/celiac-disease

· American Academy of Family Physicians (AAFP) — Diagnosis and Management of Celiac Disease: Guidelines From the American College of Gastroenterology (2024) https://www.aafp.org/pubs/afp/issues/2024/0100/practice-guidelines-celiac-disease.html

· Houston Methodist — Celiac Disease: Symptoms, Treatment and What To Know (2024) https://www.houstonmethodist.org/blog/articles/2024/jun/celiac-disease-symptoms-treatment-and-what-to-know/

· PMC / Nutrients Journal — The Gluten-Free Diet for Celiac Disease and Beyond https://pmc.ncbi.nlm.nih.gov/articles/PMC8625243/

· PMC / Diabetes Spectrum — The Gluten-Free Diet: Fad or Necessity? https://pmc.ncbi.nlm.nih.gov/articles/PMC5439366/

· Harvard T.H. Chan School of Public Health — Gluten: A Benefit or Harm to the Body? https://nutritionsource.hsph.harvard.edu/gluten/

·Harvard Health — Ditch the Gluten, Improve Your Health? https://www.health.harvard.edu/staying-healthy/ditch-the-gluten-improve-your-health

Medical Disclaimer

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