Here are just some of the ways that your body starts to repair itself after you quit smoking(1,2):

blood_pressure

After 20 mins

Heart rate and blood pressure drop

oxygen

After 12 hours

Carbon monoxide level in your blood drops to normal

relationship_strain

Within 24 hours

Your risk of having a heart attack starts to lower

deep_breath

Within 1 to 9 months

  • Your circulation improves
  • Your lung function increases - coughing and shortness of breath reduces
heart_attack_risk_half_1

Within 1 year

Your added risk of having coronary heart disease is half than someone who smokes

stroke

Within 5 years

  • Your chance of having a stroke is about the same as someone who has never smoked
  • You lower your risk of developing mouth, throat, esophagus, and bladder cancer by about half
lungs

Within 10 years

You lower your risk of developing lung cancer by about half

health

Within 15 years

Your risk of coronary heart disease is about the same as someone who has never smoked

vaping

What about quitting vaping?

We are still learning about how vaping affects your health in the long term. From what we know right now, quitting vaping can help you breathe better and reduce coughing and wheezing. It may also strengthen your immune system, reduce your risk of developing lung diseases and injuries, and lower your chance of a heart attack or stroke.

Learn About Vaping

woman in nature smiling and breathing deeply

How will your life get better when you quit?

These are just some of the amazing health benefits of quitting smoking. Quitting also lowers your risk of at least 16 types of cancers, including stomach, liver, bladder, and kidney cancers.3 It improves your fertility and reduces your risk of diabetes.4 It can also prevent existing health conditions from worsening and can help you heal faster from surgery or infections.5 

Quitting at a younger age has the most benefits. Quitting before age 40 reduces the risk of dying from smoking-related diseases by about 90%, but quitting at any age has incredible benefits for your health.6

References

  1. Health Canada (2024). Quit with confidence: Deciding to quit. https://www.canada.ca/en/health-canada/services/smoking-tobacco/quit-smoking.html

  2. World Health Organization (2020). Tobacco: Health benefits of smoking cessation. https://www.who.int/news-room/questions-and-answers/item/tobacco-health-benefits-of-smoking-cessation

  3. Sharma, R., & Rakshit, B. (2022). Global burden of cancers attributable to tobacco smoking, 1990-2019: an ecological study. EPMA Journal, 14(1), 167–182. https://doi.org/10.1007/s13167-022-00308-y

  4. Maddatu, J., Anderson-Baucum, E., & Evans-Molina, C. (2017). Smoking and the risk of type 2 diabetes. Translational Research, 184, 101–107. https://doi.org/10.1016/j.trsl.2017.02.004

  5. Sørensen L. T. (2012). Wound healing and infection in surgery. The clinical impact of smoking and smoking cessation: a systematic review and meta-analysis. Archives of Surgery, 147(4), 373–383. https://doi.org/10.1001/archsurg.2012.5

  6. Peto, R., McAfee, T., Anderson, R., Thun, M., Rostron, B., Landsman, V., Ramasundarahettige, C., & Jha, P. (2013). 21st-Century Hazards of Smoking and Benefits of Cessation in the United States. New England Journal of Medicine, 368(4), 341–350. https://doi.org/10.1056/NEJMsa1211128

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