After 1 day
Just 1 day after quitting smoking, the risk of heart attack begins to decrease.
After 2 days
Smoking damages the nerve endings responsible for the senses of smell and taste. In as little as 2 days after quitting, a person may notice a heightened sense of smell and more vivid tastes as these nerves heal.
After 1 month
In as little as 1 month, a person’s lung function begins to improve. As the lungs heal and lung capacity improves, former smokers may notice less coughing and shortness of breath.
After 9 months
Nine months after quitting, the lungs have significantly healed themselves. The delicate, hair-like structures inside the lungs known as cilia have recovered from the toll cigarette smoke took on them. These structures help push mucus out of the lungs and help fight infections.
After 1 year
One year after quitting smoking, a person’s risk for coronary heart disease decreases by half. This risk will continue to drop past the 1-year mark.
After 10 years
After 10 years, a person’s chances of developing lung cancer and dying from it are roughly cut in half compared with someone who continues to smoke.