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Division of Periodontology

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DDS Curriculum

Advanced Education

Tobacco Cessation




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Home > Tobacco Use Cessation Program > Didactic Components > What happens after you quit smoking...

What happens after you quit smoking...

Within 20 Minutes...

  • Blood pressures drops
  • Pulse rate drops to normal
  • Body temperature of hand and feet increases to normal

Within 8 hours...

  • Carbon monoxide level in blood drops to normal
  • Oxygen level in blood increases to normal

Within 24 hours...

  • Chance of heart attack decreases

Within 48 hours...

  • Nerve endings start regrowing
  • Ability to smell and taste is enhanced

Within 2 weeks to 3 months...

  • Circulation improves
  • Walking becomes easier
  • Lung function increases up to 30%

Within 1 to 9 months...

  • Coughing, sinus congestion, fatigue, and shortness of breath decrease
  • Cilia regrow in the lungs, increasing the ability to handle mucus, clean lungs and reduce infection
  • Body's overall energy increases

Within 1 year...

  • Excess risk of coronary heart disease is half that of a smoker

Within 5 years...

  • Stroke risk is reduced to that of a nonsmoker 5-15 years after quitting
  • Risk of cancer of the mouth, throat and esophagus is half that of a smoker

Within 10 years...

  • Lung cancer death rate about half that of a continuing smoker's
  • Risk of cancer of the mouth, throat, bladder, kidney and pancreas decreases

Within 15 years...

  • Risk of coronary heart disease is that of a nonsmokers

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