5 Years After Quitting
Your stroke risk is reduced to that of a nonsmoker’s 5-15 years after quitting.

10 Years After Quitting
Your lung cancer death rate is about half that of a smoker’s.
Your risk of cancers of the mouth, throat, esophagus, bladder, kidney, and pancreas decreases.

15 Years After Quitting
Your risk of coronary heart disease is back to that of a nonsmoker’s.

Source: American Cancer Society; Cetres for Disease Control and Prevention.