Your heart rate drops.
The carbon monoxide level in your blood drops to normal.
2 weeks to 3 months
Your heart attack risk begins to drop. Your lung function begins to improve.
1 to 9 months
Your coughing and shortness of breath decrease.
Your added risk of coronary heart disease is half that of a smoker’s
5 to 15 years
Your stroke risk is reduced to that of a nonsmoker’s.
Your lung cancer death rate is about half that of a smoker’s. Your risk of cancer of the mouth, throat, esophagus, bladder, kidney, and pancreas decreases.
Your risk of coronary heart disease is back to that of a nonsmoker’s and your risk of death returns to nearly the level of people who never have smoked.