Effects of Substances

From a daily diet of carbohydrates, proteins, dietary fats, vitamins and minerals - to illegal performance enhancing drugs, there are positive and negative consequences and effects for the substances we put in our bodies. This section contains information on proper nutrition and the side effects of performance enhancing drugs (PEDs).

Performance-Enhancing Drugs


This section provides answers to common questions about health and safety risks associated with some of the banned substances mentioned on the Prohibited List. It also provides information concerning the legitimate medical use of these substances.  Click here to learn more.

Optimal Dietary Intake Guide


Want to learn the basics about nutrition including what to eat in order to maintain a healthy lifestyle and maximize your athletic performance? USADA's Optimal Dietary Intake Guide is a valuable resource. Click here to learn more