Some people worry about gaining weight if they quit smoking, but researchers say it's worth it.
Researchers looked at data from more than 3,000 people. They found people who quit smoking cut their heart disease risk in half. People on average gain between 6 and 13 pounds when they stop smoking.
Experts say that small weight gain is more than offset by the reduced heart disease risk.
The American Heart Association says smokers die about 13 years sooner than non-smokers