Muscle strength is crucial for good health, particularly as you get older. But muscle naturally deteriorates with age, and as people in the U.S. live longer, doctors are increasingly aware of issues ...

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 ...

Scientists at the University of California, Irvine's School of Pharmacy & Pharmaceutical Sciences have discovered how muscle stem cells "flip a switch" to rebuild damaged muscle – a finding that could ...