That sudden awareness of your heart beating faster, skipping a beat, or pounding in your chest can be unsettling. You’re experiencing what doctors call palpitations, and while they might feel alarming, they’re actually quite common. Understanding what causes them, when to worry, and how they’re treated can help put your mind at ease.
What Are Heart Palpitations?
Heart palpitations are essentially your heightened awareness of your own heartbeat. Normally, you don’t notice your heart beating throughout the day. When palpitations occur, you suddenly become conscious of this usually automatic process. People describe the sensation in various ways: your heart might feel like it’s racing, pounding, fluttering, flip-flopping, or skipping beats entirely.
You can feel palpitations in different locations too. While most people notice them in their chest, you might also feel them in your throat or neck. Some people even hear their heartbeat, especially when lying in bed at night in a quiet room.
Common Causes of Palpitations
The most frequent trigger for palpitations is anxiety or stress. When you’re worried, scared, or experiencing a panic attack, your body’s fight-or-flight response kicks in, causing your heart to beat faster and harder. But anxiety isn’t the only culprit.
Lifestyle factors play a significant role. Caffeine from coffee, tea, or energy drinks can trigger palpitations, as can alcohol and spicy foods. Many people notice palpitations after eating large, heavy meals rich in carbohydrates or sugar. Smoking and recreational drugs like cocaine or amphetamines are also common triggers.
Hormonal changes during pregnancy, menstruation, or menopause frequently cause palpitations. During pregnancy, your body produces more blood to support your baby, which can make your heart work harder and create noticeable palpitations.
Certain medications, including asthma inhalers, decongestants, thyroid medications, corticosteroids, and some blood pressure drugs, may cause palpitations as a side effect.
Medical conditions can also be responsible. An overactive thyroid gland speeds up your metabolism and heart rate. Low blood sugar, anemia, dehydration, imbalances of potassium or magnesium, and fever can all trigger palpitations.
Arrhythmias are an abnormal rhythm of the heart that can be perceived as palpitations. Common types include atrial fibrillation (irregular, often rapid heart rate) commonly known as afib, ventricular tachycardia or vtach, (a rapid heart rate that starts in the lower chambers of the heart), and premature ventricular contractions (extra heartbeats) sometimes called PVCs. Some arrhythmias such as PVCs are harmless, while others can increase the risk of stroke, heart failure, or sudden cardiac arrest.
Palpitations can be a sign of more serious heart disease, such as coronary artery disease, cardiomyopathy, or heart valve problems. These often come with other symptoms such as chest pain, dizziness, or shortness of breath.
Recognizing the Symptoms
Beyond the basic awareness of your heartbeat, palpitations can come with additional sensations. You might feel like your heart is beating too fast or too hard. Some people describe a fluttering sensation, like butterflies in their chest. Others feel like their heart is skipping beats or adding extra ones.
The timing and triggers of your palpitations can provide important clues. Some people only notice them at night when lying down, simply because there are fewer distractions. Others experience them after exercise, during stressful situations, or following meals.
Most palpitations are brief, lasting just seconds to a few minutes. However, if they persist for longer periods or occur frequently throughout the day, they warrant medical attention.
How Palpitations Are Diagnosed
When you visit your doctor about palpitations, they’ll start with a detailed conversation about your symptoms. They’ll ask you to describe exactly what you feel, when the palpitations occur, and what might trigger them. Your medical history, including any heart conditions, medications, and family history of heart problems, is crucial information.
The physical examination includes listening to your heart and lungs with a stethoscope, checking your blood pressure, and looking for signs of other conditions that might cause palpitations, such as an enlarged thyroid gland.
The most important initial test is an electrocardiogram (ECG or EKG), which records your heart’s electrical activity. This painless test can detect irregular heart rhythms if they occur during the recording. However, since palpitations often come and go, you might not experience them during the brief ECG.
For this reason, doctors often recommend longer-term monitoring. A Holter monitor is a portable device you wear for 24 to 48 hours that continuously records your heart rhythm during normal activities. Event monitors can be worn for weeks or months, and you activate them when you feel symptoms.
Blood tests can check for conditions like anemia, thyroid problems, or electrolyte imbalances that might trigger palpitations. An echocardiogram, which uses sound waves to create images of your heart, can reveal structural problems.
Benign vs. Dangerous Palpitations
Here’s the good news: most palpitations are benign and don’t indicate serious heart problems. Research shows that about 16% of people see their primary care doctor for palpitations, but the vast majority have harmless causes.
Benign palpitations typically occur in people with normal heart function and no structural heart disease. They’re often triggered by identifiable factors like stress, caffeine, or hormonal changes. These palpitations usually last only seconds to minutes and resolve on their own.
However, certain warning signs suggest palpitations might indicate a more serious condition. Seek immediate medical attention if palpitations occur with chest pain, severe shortness of breath, dizziness, fainting, or near-fainting episodes. These symptoms could indicate dangerous heart rhythms that affect your heart’s ability to pump blood effectively.
People with existing heart disease, previous heart attacks, or significant risk factors for heart disease should take palpitations more seriously. In these cases, palpitations might signal a dangerous arrhythmia that requires prompt treatment.
The pattern of palpitations can also provide clues. Sustained episodes lasting hours, very frequent daily occurrences, or palpitations that worsen over time are more concerning than occasional brief episodes.
Treatment and Management Options
Treatment for palpitations depends entirely on their underlying cause. When palpitations are benign and caused by lifestyle factors, the focus is on avoiding triggers and making healthy changes.
Stress management is often the most effective intervention. Techniques like deep breathing exercises, meditation, yoga, or regular counseling can significantly reduce stress-related palpitations. Regular exercise, while it might temporarily increase your heart rate, actually helps reduce overall palpitation frequency by improving cardiovascular fitness and stress resilience.
Dietary modifications can be very effective. Reducing or eliminating caffeine, limiting alcohol consumption, and avoiding large heavy meals can prevent many episodes. Staying well-hydrated and maintaining stable blood sugar levels through regular, balanced meals also helps.
For palpitations caused by medical conditions, treating the underlying problem usually resolves the symptom. This might involve thyroid medication for hyperthyroidism, iron supplements for anemia, or adjusting medications that trigger palpitations.
When palpitations are caused by heart rhythm disorders, more specific treatments may be necessary. Medications called beta-blockers can slow heart rate and reduce palpitation frequency. For more serious arrhythmias, doctors might recommend procedures like catheter ablation, which uses targeted energy to correct abnormal electrical pathways in the heart.
Some people benefit from devices like pacemakers (for slow heart rhythms) or implantable cardioverter defibrillators (for dangerous fast rhythms). However, these interventions are reserved for serious heart conditions, not typical benign palpitations.
While most current treatments focus on medications and procedures, emerging technologies like smartphone monitoring and wearable devices may play larger roles in future palpitation management.
When to Seek Help
Most palpitations don’t require emergency care, but certain situations demand immediate attention. Call 911 if palpitations occur with chest pain or pressure, severe shortness of breath, fainting, severe dizziness, if your pulse feels very fast or erratic, or any signs that might indicate a heart attack.
Schedule a regular appointment with your doctor if you experience frequent palpitations, if they’re interfering with your daily activities, or if you have risk factors for heart disease. Even if your palpitations turn out to be benign, getting proper evaluation provides peace of mind and ensures you’re not missing any underlying conditions.
Remember, while palpitations can feel frightening, they’re usually harmless. Recognizing the difference between harmless triggers and signs of more serious conditions and understanding their causes and knowing when to seek help are keys to managing your heart health
The U.S. Public Health Service: Guardians of America’s Health
By John Turley
On July 3, 2025
In Commentary, History, Medicine
The United States Public Health Service (USPHS) has quietly served as the backbone of the nation’s public health infrastructure for over two centuries. From its beginnings as a maritime medical service to its current role as a comprehensive public health organization, the USPHS has evolved to meet the changing medical challenges facing Americans and to protect and promote the health of the nation.
Origins and Early History
The U.S. Public Health Service traces back to 1798, when President John Adams signed “An Act for the Relief of Sick and Disabled Seamen.” This legislation established the Marine Hospital Service and created a network of hospitals to care for the merchant sailors who served America’s growing maritime commerce. The act represented one of the first examples of federally mandated health insurance, as ship owners were required to pay 20 cents per month per sailor to fund medical care.
The Marine Hospital Service initially operated a series of hospitals in major port cities including Boston, New York, Philadelphia, and Charleston. These facilities served not only sick and injured sailors but also played a crucial role in preventing the spread of infectious diseases that could arrive on ships from foreign ports. This dual function of treatment and prevention would become a defining characteristic of the USPHS mission.
The transformation from the Marine Hospital Service to the modern Public Health Service began in the late 19th century. In 1889, the organization was restructured and placed under the supervision of Dr. John Maynard Woodworth as Supervising Surgeon—later Surgeon General—marking the beginning of its evolution into a more comprehensive public health agency. The name was officially changed to the Public Health and Marine Hospital Service in 1902, and finally to the U.S. Public Health Service in 1912, reflecting its expanded mandate beyond maritime health.
Evolution and Expansion
The early 20th century brought significant expansion to the USPHS mission. The 1906 Pure Food and Drug Act gave the service regulatory responsibilities, leading to the creation of what would eventually become the Food and Drug Administration. During World War I, the USPHS took on additional responsibilities for military health and epidemic control, establishing its role as a rapid response organization for national health emergencies.
The Great Depression and World War II further expanded the service’s scope. The Social Security Act of 1935 created new public health programs administered by the USPHS, while wartime demands led to increased focus on occupational health, environmental health hazards, and the health needs of defense workers. The post-war period saw the establishment of the National Institutes of Health—originally called the Laboratory of Hygiene—as part of the USPHS, cementing its role in medical research.
Major Functions and Modern Roles
Today’s U.S. Public Health Service operates as part of the Department of Health and Human Services and supports major agencies and functions. The service’s mission centers on protecting, promoting, and advancing the health and safety of the American people through several key areas.
Disease Prevention and Health Promotion are the core of USPHS activities. It works with the Centers for Disease Control and Prevention (CDC), to lead national efforts in the prevention and control of infectious and chronic diseases. From tracking disease outbreaks to promoting vaccination programs, the USPHS a part of America’s first line of defense against health threats.
Regulatory and Safety Functions represent other crucial areas. The USPHS coordinates with the Food and Drug Administration (FDA) to ensure the safety and efficacy of medications, medical devices, and food products. It works with the Agency for Toxic Substances and Disease Registry monitoring environmental health hazards. Other USPHS components are involved in regulating everything from clinical laboratories to health insurance portability.
Emergency Response and Preparedness has become increasingly important in recent decades. The USPHS maintains rapid response capabilities for natural disasters, disease outbreaks, and public health emergencies. This includes the deployment of Commissioned Corps officers to disaster zones and the maintenance of strategic national stockpiles of medical supplies.
Health Services for Underserved Populations continues the service’s historic mission of providing care where it’s most needed. The Health Resources and Services Administration oversees community health centers, rural health programs, and initiatives to address health disparities among vulnerable populations. The Indian Health Service is an important part of the USPHS, providing healthcare to often isolated communities.
The Commissioned Corps
One of the most distinctive features of the USPHS is its Commissioned Corps, a uniformed service of over 6,000 public health professionals. Established in 1889, the Corps operates as one of the eight uniformed services of the United States, alongside the armed forces, NOAA Corps, and Coast Guard. Officers hold military-style ranks and wear uniforms, but their mission focuses entirely on public health rather than defense.
The Commissioned Corps provides a ready reserve of highly trained health professionals who can be rapidly deployed to address public health emergencies. From hurricane and disaster relief to pandemic assessment and treatment, Corps officers have served on the front lines of America’s health challenges, providing everything from direct patient care to epidemiological investigation and public health program management.
Contemporary Challenges and Future Directions
The U.S. Public Health Service continues to evolve in response to emerging health challenges. Climate change, antimicrobial resistance, mental health crises, and health equity concerns represent current priorities. The COVID-19 pandemic demonstrated both the critical importance of robust public health infrastructure and the challenges of maintaining public trust in health authorities.
As America faces an increasingly complex health landscape, the USPHS mission of protecting and promoting the nation’s health remains as relevant as ever. From its origins serving sailors in port cities to its current role addressing global health threats, the U.S. Public Health Service continues its quiet but essential work of safeguarding American health, adapting its methods while maintaining its core commitment to serving the public good.
The service’s history shows that effective public health requires not just scientific expertise, but also the institutional ability to respond rapidly to emerging threats, the authority to implement necessary interventions, and the public trust to lead national health initiatives. As new challenges appear, the USPHS continues to build on its more than two-century legacy of service to the American people.