Large reviews in healthy adults show no clear kidney damage when creatine is used at recommended doses-often 3 to 5 grams a day-for several years. The quiet danger is in people who already have ...

A creatine kinase test is a blood test that measures levels of an enzyme called creatine kinase. This enzyme supports energy ...

Race organizers preparing for Sunday's Marine Corps Marathon had more than logistics and stepped-up security precautions to think about. They also faced a startling new finding that marathon runners, ...