The world of muscle building supplements is a treacherous one—a world in which label claims SHOUT for your eyes and ripped-as-all-get-out cartoon images ... powder and creatine on this list ...

And while Hobson noted that some of these supplements might contain helpful ingredients, like creatine ... to one sports nutritionist. Getty Images Next on the dietitian’s list of don’ts ...

More Photo: Christoph Soeder/dpa (Photo by Christoph Soeder/picture alliance via Getty Images) Taking dietary creatine supplements for at least six months might help in reducing the severity of ...