Steroid use is not just a problem for professional sports stars. Studies show that teenagers - especially boys - are using steroids in high school to change the appearance and strength of their bodies. As is true of the use of many addictive, illegal drugs, steroid use at a young age comes with a long list of worrisome side effects, including heart irregularities, cancer, and serious emotional problems. ""Steroids and Other Performance-Enhancing Drugs"" explores the facts and science behind teen steroid use, as well as efforts to keep the problem under control for professional sports stars and young people.