Heart Disease Risk Halved
Circulation and lung function improve by up to 30%. Heart disease risk drops significantly.
What happens to your body 3 months after quitting smoking
At three months, the improvements to your cardiovascular and respiratory systems are substantial. Your lung function has improved by up to 30%, making exercise and daily activities significantly easier. Your risk of heart disease has dropped considerably. The improvements in blood flow mean your heart doesn't have to work as hard, and the risk of blood clots has decreased. Many people notice they get sick less often as their immune system benefits from improved circulation and lung function.
Frequently asked questions
How much does lung function improve after 3 months?
Studies show lung function can improve by up to 30% within 2–3 months of quitting. The exact improvement depends on how long and heavily you smoked, your age, and your overall health.
Is heart disease risk really halved this quickly?
The risk begins dropping immediately and continues to decline. By 3 months, the reduction is significant. By 1 year, your risk is roughly half that of a current smoker. It takes about 15 years for the risk to equal that of someone who never smoked.