An honest question from a former smoker on a social network has sparked a wave of reactions and misinformation. Some say that the lungs clean themselves completely within 5 years, while others warn that the damage is irreversible. What do doctors say about the time it takes for a former smoker’s lungs to heal? And how accurate are the images of black lungs circulating on the internet?

(Staff: Netherlands & Belgium / Health & Lifestyle)

A seemingly simple but deeply personal question was posted on a social network by a user who had smoked a pack a day for 15 years and quit smoking 35 years ago. His question: “What are my lungs like now? Has that blackness gone?” The responses ranged from optimistic assurances to gloomy warnings, while images of black lungs circulating on the internet added even more confusion. Here is what doctors say about the subject.

What happens in the body after you quit smoking?

The healing process begins immediately after the last cigarette. According to medical information, just 20 minutes after quitting, heart rate and blood pressure begin to fall. After 8 hours, the level of carbon monoxide in the blood decreases, allowing oxygen to reach the organs more effectively. After 24 hours, the risk of a heart attack begins to decrease. After 48 hours, the taste buds and sense of smell begin to improve.

But what about the lungs? How long does it take for them to clear?

A common claim circulating on the internet is that the lungs are completely cleaned within 5 years. Others say it takes 15 years. The truth is more nuanced.

Doctors explain that the lungs have a remarkable capacity for self-repair, but it is not unlimited. After a person quits smoking, damaged cells gradually begin to be replaced. During the first few months, coughing and phlegm production may increase as the lungs begin to clear accumulated mucus.

According to some medical sources, after 5 years without smoking, the risk of lung cancer is reduced by half compared with that of an active smoker. After 10 years, the risk of lung cancer is lower than that of a continuing smoker, although it does not necessarily become identical to that of someone who has never smoked. Nevertheless, lung tissue does not necessarily return completely to its original state. Some damage, particularly damage affecting lung elasticity or leading to emphysema, can be irreversible.

What are the images of black lungs?

Images circulating on the internet showing a healthy, pink lung alongside a black and damaged lung are often authentic, but they do not represent the condition of the lungs of an average smoker. These images usually come from patients with advanced lung diseases, such as lung cancer or severe emphysema, and are used for educational purposes. A smoker’s lung may have dark spots, but it does not simply turn completely black, as some exaggerated images suggest.

What does a doctor say about the user’s case?

For the user who smoked for 15 years and quit 35 years ago, the outlook is good. Thirty-five years after quitting, the risk of smoking-related diseases is significantly reduced and may approach that of a person who has never smoked. His lungs have had many years to recover, although some traces of his past as a smoker may remain.

Conclusion

Quitting smoking is one of the best decisions a person can make for their health. Even if the lungs never become completely “like new”, the benefits are immense and begin within the first hours after the last cigarette. So for those wondering whether it is too late to quit, the answer is clear: it is never too late. And for those who have already quit, they have every reason to be proud of that choice, regardless of how much time has passed.