Jackie Garcia was a gym rat until crippling fatigue and inexplicable weight gain derailed the Houston resident's life. The mystery puzzled doctors for years.

Rapid weight gain can stem from various factors, including lifestyle habits, hormonal imbalances, and underlying medical ...

Elvis Presley tried extreme weight loss methods, including 500-calorie diets, protein injections from pregnant women's urine, and dangerous medical comas ...

Reality Show 'Fit to Fat to Fit' Makes Trainers Gain Weight Before They Can Help Others Lose Weight Trainer JJ Peterson went from 184 pounds to 245 pounds in 120 days.

People often report weight gain after they quit smoking. If you're worried about that, here's what to know and how to prevent gaining weight.