The Brief A condition called bigorexia is drawing concern from doctors as more boys and young men obsess over being muscular. It's the reverse of anorexia, and some doctors say it's on the rise, especially among young boys and men. He estimates about 2% of teenage boys in the U.S. have bigorexia. While not everyone who is trying to bulk up will have bigorexia, Nagata warns they have a higher risk for developing the disorder. How to Spot Bigorexia and Where to Get HelpWhat's next:Nagata says it takes an interdisciplinary approach to treat someone with bigorexia.