No matter what your age or how long you have smoked, giving up cigarettes improves your chances of living a longer life. Just 12 hours after your last cigarette, the carbon monoxide level in your blood returns to normal. A year after you've quit, your risk of heart disease is half that of a smoker's. This quiz can help you learn about the benefits of quitting smoking.
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Author: Floria, Barbara
Online Medical Reviewer: Berry, Judith, PhD, APRN
Online Medical Reviewer: MMI board-certified, academically affiliated clinician
Date Last Reviewed: 10/01/2024
© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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