Add Yahoo as a preferred source to see more of our stories on Google. A preoccupation with being lean and muscular could be a sign of muscle dysmorphic disorder, experts said. - ...

Loss of muscle mass, also called muscle wasting or atrophy, can happen gradually as part of getting older or more suddenly due to underlying medical conditions. Other factors can contribute, like ...

(CNN) — Protein shakes, pre-workout mixes and other supplements aren’t always just a part of a gym routine. In adolescents and young adults, they could be connected to a body image disorder that ...