Addiction, Health Risks, and the Benefits of Quitting
Cigarette smoking remains one of the leading causes of preventable death worldwide. In the more than 65 years since the US Surgeon General first required health warnings to be placed on cigarette packs, significant progress has been made in reducing the rates of smoking. In 1965 about 45% of US adults were smokers and today fewer than 12% smoke on a regular basis. Youth smoking rates have also declined dramatically. In recent years fewer than 5% of high school students report smoking on a regular basis. In my high school class (1966) the smoking rate was probably closer to 30%. As encouraging as these numbers are, there is no acceptable rate of smoking, and I hope those of you who don’t smoke will pass this article on to family or friends who do.
The Power of Nicotine Addiction
Nicotine, the primary addictive substance in cigarettes, is remarkably potent. When inhaled, it travels to the brain within seconds, where it stimulates the release of dopamine, a neurotransmitter that creates a feeling of pleasure and relaxation. Over time, the brain rewires itself, craving nicotine to maintain these pleasurable effects, leading to dependency.
The addictive nature of nicotine makes quitting extremely difficult, as withdrawal symptoms, including irritability, anxiety, difficulty concentrating, and intense cravings, can deter many smokers from quitting. Nicotine also increases heart rate and blood pressure, contributing to the stress-relief paradox: although many smokers feel cigarettes help them relax, the substance actually exacerbates stress on the cardiovascular system.
Smoking can be tied to our daily routines. Some people have commonly have a cigarette with morning coffee or after meals. Other people reach for a cigarette when they’re on the telephone. Social settings and peer influence can make quitting difficult. Attending social gatherings where smoking is common can reignite cravings. A smoker who decides to quit can feel surrounded by the temptations to resume smoking.
There are a number of other factors also that make it difficult to quit smoking. There’s a lack of immediate health benefits noted. Improvements like better lung function, reduced cancer risk or long terms outcomes are not noted right away. Some smokers fear weight gain more than they fear the effects of smoking and will delay any attempts at cessation because of that. Some smokers also feel frustration because after a few days without a cigarette they think “I don’t feel any better, what’s the point?”
Health Risks: Nicotine and Smoke by-products
Cigarette smoke contains over 7,000 chemicals, many of which are toxic. Among these are tar, carbon monoxide, formaldehyde, and heavy metals like cadmium and lead. Some chemicals are carcinogens, contributing to the development of cancer, while others damage tissues and organs in less visible but no less harmful ways.
- Cardiovascular disease: Smoking increases the risk of heart attacks, strokes, and peripheral artery disease. It contributes to the buildup of plaque in arteries, restricting blood flow and forcing the heart to work harder. Among smokers greater than age 40, more than 50% develop cardiovascular disease and they’re more than twice as likely to die from cardiovascular events compared to non-smokers.
- Congestive heart failure: Nicotine triggers release of adrenaline which increases both heart rate and blood pressure, putting more strain on the heart. Carbon monoxide from cigarettes binds to hemoglobin reducing the oxygen carrying capacity of the blood. Plaque buildup from coronary artery disease as well as myocardial fibrosis, scarring in the heart tissue, both lead to impaired cardiac function. Quitting smoking can significantly lower the risk of death from heart failure related complications.
- Chronic obstructive pulmonary disease (COPD): Smoking damages the lungs, leading to chronic conditions such as emphysema and chronic bronchitis. Over time, lung capacity declines, making breathing progressively more difficult. Even with smoking cessation, lost lung function cannot be fully recovered. It is vitally important that anyone with pulmonary disease quit smoking as soon as possible.
- Cancer: Tobacco use is responsible for roughly 80% of lung cancer cases. It is also linked to cancers of the mouth, throat, esophagus, pancreas, bladder, and cervix, among others.
- Diabetes: Smoking increases the risk of type 2 diabetes by around 30 to 40%. Smokers with diabetes are much more likely to experience complications such as heart disease and kidney failure.
- Reproductive health issues: Smoking affects fertility in both men and women. Pregnant smokers are at higher risk for miscarriage, preterm delivery, and having low-birth-weight infants.
The Benefits of Quitting Smoking
It’s never too late to quit smoking, and the benefits begin almost immediately after quitting.
- Within 20 minutes: Blood pressure and heart rate start to normalize.
- Within 12 hours: Carbon monoxide levels in the blood drop to normal, improving oxygen flow.
- Within weeks: Lung function improves, and circulation begins to return to normal.
- Within months to a year: Coughing and shortness of breath decrease, and the risk of heart disease drops significantly.
- Within five years: Stroke risk drops to that of a non-smoker, and the risk of certain cancers is cut in half.
- After ten years or more: The risk of lung cancer is about half of what it would have been had the person continued to smoke.
The Deceptive Appeal of Vaping
Unfortunately, the rise of e-cigarettes, also known as vaping, has emerged as an alternative to smoking among many people. E-cigarettes deliver nicotine through vapor rather than smoke. While they eliminate some of the harmful byproducts like tar and carbon monoxide, vaping is not without risks. Some vaping products contain toxic materials not contained in tobacco. Especially custom or self-blended cartridges for vape pens that may have carcinogenic or otherwise harmful additives not readily obvious to the user. Unfortunately, many adolescents and young adults who have never smoked cigarettes have developed a nicotine addiction through e-cigarette use.
Conclusion
There is no safe level of use of tobacco or other forms of nicotine. Quitting smoking improves quality of life, reducing the frequency of respiratory infections and improving overall energy levels. For long-time smokers, the prospect of reversing years of damage may seem daunting, but research consistently shows that health outcomes improve at any point, even decades after quitting. If I could give my smoking patients only one piece of medical advice it would be: “Quit smoking and quit now”. And I know how hard it is. I quit smoking 53 years ago and for many years afterwards it remained a daily struggle. But eventually, with the help and support of my family I was able to get past my tobacco cravings.
The Harmful Grip of Cigarette Smoking
By John Turley
On October 24, 2024
In Commentary, Medicine
Addiction, Health Risks, and the Benefits of Quitting
Cigarette smoking remains one of the leading causes of preventable death worldwide. In the more than 65 years since the US Surgeon General first required health warnings to be placed on cigarette packs, significant progress has been made in reducing the rates of smoking. In 1965 about 45% of US adults were smokers and today fewer than 12% smoke on a regular basis. Youth smoking rates have also declined dramatically. In recent years fewer than 5% of high school students report smoking on a regular basis. In my high school class (1966) the smoking rate was probably closer to 30%. As encouraging as these numbers are, there is no acceptable rate of smoking, and I hope those of you who don’t smoke will pass this article on to family or friends who do.
The Power of Nicotine Addiction
Nicotine, the primary addictive substance in cigarettes, is remarkably potent. When inhaled, it travels to the brain within seconds, where it stimulates the release of dopamine, a neurotransmitter that creates a feeling of pleasure and relaxation. Over time, the brain rewires itself, craving nicotine to maintain these pleasurable effects, leading to dependency.
The addictive nature of nicotine makes quitting extremely difficult, as withdrawal symptoms, including irritability, anxiety, difficulty concentrating, and intense cravings, can deter many smokers from quitting. Nicotine also increases heart rate and blood pressure, contributing to the stress-relief paradox: although many smokers feel cigarettes help them relax, the substance actually exacerbates stress on the cardiovascular system.
Smoking can be tied to our daily routines. Some people have commonly have a cigarette with morning coffee or after meals. Other people reach for a cigarette when they’re on the telephone. Social settings and peer influence can make quitting difficult. Attending social gatherings where smoking is common can reignite cravings. A smoker who decides to quit can feel surrounded by the temptations to resume smoking.
There are a number of other factors also that make it difficult to quit smoking. There’s a lack of immediate health benefits noted. Improvements like better lung function, reduced cancer risk or long terms outcomes are not noted right away. Some smokers fear weight gain more than they fear the effects of smoking and will delay any attempts at cessation because of that. Some smokers also feel frustration because after a few days without a cigarette they think “I don’t feel any better, what’s the point?”
Health Risks: Nicotine and Smoke by-products
Cigarette smoke contains over 7,000 chemicals, many of which are toxic. Among these are tar, carbon monoxide, formaldehyde, and heavy metals like cadmium and lead. Some chemicals are carcinogens, contributing to the development of cancer, while others damage tissues and organs in less visible but no less harmful ways.
The Benefits of Quitting Smoking
It’s never too late to quit smoking, and the benefits begin almost immediately after quitting.
The Deceptive Appeal of Vaping
Unfortunately, the rise of e-cigarettes, also known as vaping, has emerged as an alternative to smoking among many people. E-cigarettes deliver nicotine through vapor rather than smoke. While they eliminate some of the harmful byproducts like tar and carbon monoxide, vaping is not without risks. Some vaping products contain toxic materials not contained in tobacco. Especially custom or self-blended cartridges for vape pens that may have carcinogenic or otherwise harmful additives not readily obvious to the user. Unfortunately, many adolescents and young adults who have never smoked cigarettes have developed a nicotine addiction through e-cigarette use.
Conclusion
There is no safe level of use of tobacco or other forms of nicotine. Quitting smoking improves quality of life, reducing the frequency of respiratory infections and improving overall energy levels. For long-time smokers, the prospect of reversing years of damage may seem daunting, but research consistently shows that health outcomes improve at any point, even decades after quitting. If I could give my smoking patients only one piece of medical advice it would be: “Quit smoking and quit now”. And I know how hard it is. I quit smoking 53 years ago and for many years afterwards it remained a daily struggle. But eventually, with the help and support of my family I was able to get past my tobacco cravings.