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Smoking & How to Quit
Smoking & How to Quit

What Happens When You Quit Smoking?

If you quit smoking right now, this tool shows how your body begins to heal immediately. (View the text-only version)

6:40 PM (in 20 minutes): Your heart rate drops.

6:20 AM (in 12 hours):
The carbon monoxide (a gas that can be toxic) in your blood drops to normal.

Nov. 19, 2008 - Feb. 5, 2009 (in 2 weeks to 3 months): Your heart attack risk begins to drop and your lungs are working better.

Dec. 5, 2008 - Aug. 5, 2009 (in 1 to 9 months): Your coughing and shortness of breath decrease and your lungs start to function better, lowering your risk of lung infection.

Nov. 5, 2009 (in 1 year) : Your risk for heart disease is half that of a smoker's.

Nov. 5, 2013 (in 5 years) : Your risk of having a stroke is the same as someone who doesn't smoke.

Nov. 5, 2018 (in 10 years): Your risk of dying from lung cancer is half that of a smoker's. Your risk of cancer of the mouth, throat, esophagus, bladder, kidney, and pancreas also decreases.

Nov. 5, 2023 (in 15 years) : Your risk of heart disease is now the same as someone who doesn't smoke.

Content last updated March 19, 2008.

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