In competitive<unk> s,<unk>  is the use of banned athletic performance-enhancing drugs by athletic competitors. The term<unk>  is widely used by organizations that regulate<unk> ing competitions. The use of drugs to enhance performance is considered unethical, and therefore prohibited, by most international<unk> s organizations, including the International Olympic Committee. Furthermore, athletes (or athletic programs) taking explicit measures to evade detection exacerbate the ethical violation with overt deception and cheating. The origins of<unk> s go back to the very creation of<unk>  itself. From ancient usage of substances in chariot racing to more recent controversies in baseball and cycling, popular views among athletes have varied widely from country to country over the years. The general trend among authorities and<unk> ing organizations over the past several decades has been to strictly regulate the use of drugs in<unk> . 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<unk>  for the public. Anti-doping authorities state that using performance-enhancing drugs goes against the "spirit of<unk> ".
Doping in sport
Responsible drug use
Bodywork 
Concussions in sport
Indoor tanning
Copycat suicide
Athletic trainer
Pornography addiction