For some people, a concern about weight gain can lead to a decision not to quit. But the weight gain that follows quitting smoking is usually small. It’s much more dangerous to keep smoking than it is to gain a small amount of weight.
You are more likely to quit smoking successfully if you deal with the smoking first, and then later take steps to lose weight. While you’re quitting, try to focus on ways to help you stay healthy, rather than on your weight. Stressing about your weight may make it harder to quit. Eat plenty of fruits and vegetables and limit fat. Be sure to drink plenty of water, and get enough sleep and regular physical activity.