Blood pressure begins to drop, and circulation may start to improve.
12 hours
The carbon monoxide level returns to normal, increasing the body’s oxygen levels.
1 day
Blood pressure begins to drop, decreasing the risk of heart disease from smoking-induced high blood pressure.
2 day
A person may notice a heightened sense of smell and more vivid tastes as these nerves heal.
3 day
Most people will experience moodiness and irritability, severe headaches, and cravings as the body readjusts.
1 month
Athletic endurance increases and former smokers may notice a renewed ability for cardiovascular activities, such as running and jumping.
3 month
For the next several months after quitting, circulation continues to improve.
9 month
The delicate, hair-like structures inside the lungs known as cilia have recovered from the toll cigarette smoke took on them.
1 year
A person’s risk for coronary heart disease decreases by half. This risk will continue to drop past the 1-year mark.
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.
15 years
The likelihood of developing coronary heart disease is the equivalent of a non-smoker. The risk of developing pancreatic cancer has reduced to the same level as a non-smoker.
20 years
The risk of death from smoking-related causes, including both lung disease and cancer, drops to the level of a person who has never smoked in their life.