Ma Junren case

Ma Junren, the coach of a group of female Chinese athletes who broke five world records in distance running in 1993 at the National Games in Beijing, China, told reporters that the runners were taking Cordyceps at his request. The number of new world records being set at a single track event caused much attention and suspicion of drug use, and the records are still widely regarded as dubious, as the athletes failed to match these performances outside of China at independently drug tested events where illicit substances other than cordyceps would be detected.