Summer Olympic Games count Olympiads, not the Games themselves, per the Olympic Charter. This contrasts with the Winter Olympic Games, which ignore the cancelled Winter Games of 1940 & 1944 in their numeric count." Summer Olympic Games The Summer Olympic Games () or the Games of the Olympiad, first held in 1896, is a quadrennial international multi-sport event. The most recent Olympics were held in Rio de Janeiro, Brazil. The International Olympic Committee (IOC) organises the Games and oversees the host city's preparations. In each Olympic event, gold medals are awarded for first place, silver medals are awarded for second place, and bronze
Doping at the Olympic Games effort to detect banned substances and recent blood transfusions. While several athletes were barred from competition by their National Olympic Committees prior to the Games, six athletes failed drug tests while in competition in Beijing. What follows is a list of all the athletes that have tested positive for a banned substance either during or after an Olympic Games in which they competed. Any medals listed were revoked by the International Olympic Commission (IOC). In 1967 the IOC banned the use of performance-enhancing drugs, instituted a Medical Commission, and created a list of banned substances. Mandatory testing began at the