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The reasons for the ban are mainly the health risks of performance-enhancing drugs, the equality of opportunity for athletes, and the exemplary effect of drug-free sport for the public. Anti-doping authorities state that using performance-enhancing drugs goes against the spirit of sport.
Performance-enhancing drugs are substances used to improve any form of activity performance in humans. In sports, the phrase performance-enhancing drugs is popularly used in reference to anabolic steroids or their precursors (hence the colloquial term steroids), anti-doping organizations apply the term broadly.erformance-enhancing drugs are used by athletes and bodybuilders. Use of cognitive performance enhancers by students is sometimes referred to as academic doping. They are also used by military personnel to enhance combat performance.