Smoking increases abdominal fat, which is the most risky to health. It increases the chances of developing heart disease, diabetes, stroke, and dementia.
Smoking cessation is often associated with an increase in weight, which can decrease motivation. Quitting smoking at any age is associated with quick and significant benefits, experts say. Smokers who quit before age 40 live almost as long as those who never smoked, a new study shows. A significant benefit is that approximately half of this benefit occurs in the first three years.