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Quit smoking timeline

What happens, hour by hour

Your body begins to heal within minutes of your last cigarette. Here's the recovery, from 20 minutes to 15 years.

  1. 20 minutes

    Heart rate & blood pressure drop

    Your heart rate begins to return to normal and your blood pressure starts to fall, both within the first 20 minutes of your last cigarette.

  2. 8 hours

    Nicotine falls, oxygen rises

    Residual nicotine in your bloodstream drops to under 7% of its peak, and the carbon monoxide level in your blood normalizes, letting your blood carry more oxygen.

  3. 24 hours

    Heart attack risk begins to fall

    Just one full day smoke-free, your risk of a heart attack already begins to decline as your cardiovascular system starts to recover.

  4. 48 hours

    Smell & taste sharpen

    Damaged nerve endings begin to regrow. Your sense of smell and taste noticeably improve as your body clears out the smoke.

  5. 72 hours

    Breathing gets easier

    Your bronchial tubes relax and your lung capacity increases, making breathing feel easier. Energy levels often begin to climb.

  6. 1 week

    Peak withdrawal eases

    The hardest part of nicotine withdrawal typically peaks within the first week. Cravings become shorter and more manageable as the physical dependence fades.

  7. 2 weeks

    Circulation & lung function improve

    Blood circulation improves and your lung function increases, making physical activity feel noticeably easier than it did while smoking.

  8. 1 month

    Coughing eases

    Coughing and shortness of breath decrease as your lungs begin to repair. Many people notice fewer respiratory symptoms in daily life.

  9. 3 months

    Walking feels lighter

    Improved circulation shows up in everyday movement — walking and gentle exercise feel less tiring, and your overall stamina grows.

  10. 6 months

    Coughing & breathlessness drop sharply

    Coughing, sinus congestion and shortness of breath reduce significantly, and you may catch fewer respiratory infections.

  11. 9 months

    Lungs clear themselves better

    The cilia — tiny hair-like structures in your lungs — have regrown and regained function, helping your lungs clear mucus and fight infection more effectively.

  12. 1 year

    Heart disease risk halves

    After one smoke-free year, your risk of coronary heart disease is about half that of a smoker's — a milestone worth marking.

  13. 5 years

    Stroke risk normalizes

    Your risk of having a stroke can drop to roughly that of a non-smoker within five years of quitting, as your blood vessels continue to recover.

  14. 10 years

    Lung cancer risk halves

    Your risk of dying from lung cancer falls to about half that of someone who still smokes. Risks of mouth, throat and pancreatic cancer also fall.

  15. 15 years

    Heart disease risk matches a non-smoker

    Fifteen years after quitting, your risk of coronary heart disease is close to that of someone who never smoked — your body's recovery is essentially complete.