Smoking even a few cigarettes a day (1 to 4) increases your risk of coronary artery disease. If a person who smokes has a heart attack, his or her risk of sudden death is twice as great as the risk of a person who does not smoke.1
Q: How long after I quit smoking will I begin to see the benefits?
A: Almost immediately. Here’s a quick rundown from the Cleveland Clinic:
After 20 minutes: Your blood pressure and pulse decrease. The temperature of your hands and feet increases.
After eight hours: The carbon monoxide level in your blood returns to normal. Oxygen levels in your blood increase.
After 24 hours: Your chance of heart attack decreases.
After 48 hours: Your ability to taste and smell starts...
Your risk of having a heart attack is cut in half 2 years after you quit smoking. And 15 years after you quit, your risk of a heart attack is similar to that of a person who never smoked.
Even if you have already had a heart attack, quitting smoking will reduce your risk of having a second one.
Even if you gain weight when you quit, your risk of heart attack decreases.
How soon you quit matters. People who quit smoking before age 50 reduce by half their risk of dying in the next 15 years compared with continuing smokers.2 But if you quit smoking before age 35, almost all of the risks from smoking can be reversed.