What is creatine? Health benefits of a supplement experts recommend for almost anyone

By Deborah Vankin My boyfriend turned 50 this year. He didn’t buy an expensive sports car. Or quit his job and form a garage band. He started taking creatine. “What is that, exactly?” I asked. “Oh, one of those things everyone takes after 50,” he said. Or 30. Or 80, as it turns out. My 84-year-old mother called the other day: “What’s, um, cree-ah-teen?” she asked. “Oh, and what’s some new popular music I should be listening to?” (She stays on top of the trends.) Creatine seems to be everywhere...