Your age, your diet, and your lifestyle can all send your body's calorie burn screeching to a halt. Here's how to fight back against extra pounds.

Don’t be fooled by false health claims. There are only two true ways to boost your metabolism: weight-loss surgery and weight training that increases muscle mass. But there are many factors that can cause your metabolism to slow and the number on the scale to creep up. The good news is you don’t have to take these changes lying down — you can always fight your metabolic triggers and change your metabolism for the better. Here's how top docs say you can reverse a bad metabolic trend and rev your body’s calorie-burning engine.