The first study to both show and measure the effects of cognitive-enhancing drugs such as modafinil, methylphenidate (best known under the trade name Ritalin), and caffeine, on chess play is being ...

See what athletes are trying, and the side effects they risk. Aug. 5, 2013— -- intro: Since steroids hit the U.S. sports scene more than 50 years ago, athletes have found new ways to get faster ...

Performance-enhancing drugs (PEDs) are medications used to improve physical performance. Many PEDs are illegal to buy when not used to treat an approved medical condition. There’s no precise ...