More than 30 rare muscular dystrophy types cause progressive muscle weakness from inherited gene mutations. Combined, they affect about 1 in 5,000 to 8,000 people. Common subtypes vary by age of onset ...

A 12-year-old boy, identified as AA, is fighting a battle far beyond his years. He suffers from Duchenne muscular dystrophy, a disease that silently steals strength and begins with faltering steps and ...

Studies on the neurons of mice suggest our own human endurance may have more to do with the brain than our physique. Regular exercise strengthens muscles and improves endurance—but new research ...