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 ...

When you think about muscles, you probably think about the ones in your arms, legs, back or abs. However, muscles do far more than move the body. A muscle is a type of tissue, a group of cells that ...