(Photo by Andy Urdaneta from Pexels)
ANN ARBOR, Mich. — Smokers, take heart: A new study reveals that quitting smoking at any age can significantly extend your life expectancy. Even if you’re in your 60s or 70s, researchers say it’s never too late to add precious years to your life.
A team from the University of Michigan quantified the benefits of quitting smoking at different ages, providing compelling evidence that it’s always a good idea to give up cigarettes, no matter your age. Their findings, published in the American Journal of Preventive Medicine, offer a ray of hope for smokers of all ages and provide healthcare professionals with powerful data to motivate their patients to quit.
“We have seen a remarkable decline in young adult smoking over the past decade. However, rates among older adults who smoke have remained stagnant and to our knowledge, no research had established the benefits for them of quitting. We wanted to show that stopping smoking is beneficial at any age and provide an incentive for older people who smoke to quit,” says Thuy T.T. Le, PhD, from the University of Michigan School of Public Health, in a media release.
The study’s most striking revelation is that a 35-year-old smoker who quits can gain an average of eight years of life compared to their lifespan if they continue to smoke. Even more surprisingly, the benefits persist well into old age. A 65-year-old who quits smoking can expect to gain an average of 1.7 years, while a 75-year-old quitter can add 0.7 years to their life.
To put these numbers into perspective, consider this: If you quit smoking at 65, you have a nearly one in four chance of gaining at least one full year of life. At 75, that chance is still about one in seven. These odds might seem small, but when it comes to extending your life, every day counts.
“The cessation benefit is not limited to young and middle-aged adults who smoke; this study demonstrates its applicability to seniors as well. While the gains from quitting at older ages may seem low in absolute values, they represent a large proportion of an individual’s remaining life expectancy,” concludes Dr. Kenneth E. Warner from Michigan’s Department of Health Management and Policy.
The researchers didn’t just look at averages. They also calculated the probability of gaining different amounts of time. For instance, more than half of 35-year-olds who quit smoking will gain at least one year of life, and over a third will gain eight years or more. Even among 75-year-olds who quit, about 8% will gain four or more years.
On the flip side, the study quantified the cost of continuing to smoke. A 35-year-old who smokes throughout their life will lose an average of 9.1 years compared to a non-smoker. That’s nearly a decade of life gone up in smoke.
These findings underscore a crucial message: while quitting earlier yields the greatest benefits, it’s never too late to quit. Every cigarette not smoked is a step towards a longer, healthier life.
Paper Summary
Methodology
The researchers used a combination of data sources to construct their model. They started with mortality rates from the Cancer Prevention Study II, which tracked over a million participants for years to study the effects of various lifestyle factors on health. They then combined this with smoking prevalence data from the 2018 National Health Interview Survey, U.S. population data, and mortality rates from 2018.
Using this information, they created life tables – statistical tools that show the probability of a person dying before their next birthday – for never-smokers, current smokers, and former smokers who quit at different ages. They then used these life tables to calculate life expectancies for each group and compare them.
Key Results
The study found that compared to never-smokers, current smokers lose an average of 9.1 years of life if they start at age 35 and continue smoking. However, if they quit at 35, they can avoid losing 8 of those years. Even quitting at 65 can help avoid losing 1.7 years. The researchers also calculated the probability of gaining different amounts of life years. For example, 52.8% of 35-year-olds who quit will gain at least 1 year of life, while 14.2% of 75-year-olds who quit will gain at least 1 year.
Study Limitations
The study relied on mortality data from 2018 and relative risk estimates from an older study. While the authors argue that these estimates likely remain current, more recent data could potentially yield slightly different results. Additionally, the study doesn’t account for variations in smoking intensity (number of cigarettes per day) beyond average patterns for different age groups and sexes.
Discussion & Takeaways
The researchers emphasize that quitting smoking is the single most important thing a person can do to enhance their life expectancy. The benefits extend across all age groups, including seniors. This information could be particularly valuable for healthcare providers trying to motivate patients to quit smoking. The study also provides a more nuanced view of the benefits of quitting by looking at the distribution of years gained, not just averages.
Funding & Disclosures
The research was supported by the National Cancer Institute of the National Institutes of Health and the Food and Drug Administration Center for Tobacco Products. The authors reported no conflicts of interest.
A 75 year old might as well take up smoking. Time at that age flies by fast so .7 years is not going to be noticable. The high from nicotine will however make life a bit more enjoyable.
There are lots of withdrawal symptoms from stopping smoking, including irritability, cravings, feeling jumpy or restless, sleep trouble, having a hard time concentrating, feeling hungrier or gaining weight, and feeling anxious, sad, or depressed. These can impact health, too, and are not easy on a 75 year old. Theoretically, it could harm your health more quitting smoking than continuing smoking. This study did not show the impacts of these withdrawal symptoms on the elderly. Note that sleep and concentration problems plague older people, and this could make it worse. Any medication used to quit smoking also has side effects which can harm people. So the answer is not as simple as this article suggests. Sometimes, it may be healthier for an old person to continue an unhealthy practice rather than deal with withdrawal symptoms. This may apply to other drugs, including alcohol. Sometimes, the withdrawal impacts could be worse than the habit.