Rapid Muscle Growth Disorder
Illustration of the human muscular system. Image Credit: cosmin4000/iStock/Getty Images The disorder that causes rapid muscle growth occurs in people who have myostatin-related muscle hypertrophy, which is a rare genetic condition that reduces body fat and can double the body’s muscle mass. The condition, which is also known as muscle hypertrophy syndrome, also can cause increased muscle strength. Advertisement Myostatin Myostatin-related muscle hypertrophy results from a deficiency of the MSTN gene....