In 1991 Brigitte Berendonk and Werner Franke, two opponents of the doping, published several theses which had been drafted former researchers in the GDR doping products which were at the Military Medical Academy Bad Saarow. Based on this work, in their book (translated from German as 'Doping Documents") they were able to reconstruct the practice of doping as it was organized by the State on many great athletes from the GDR, including Marita Koch and Heike Drechsler , who have denied the allegations. Brigitte Berendonk survived a 1993 lawsuit where Drechsler accused her of lying. The lawsuit essentially validates the book. [ improper synthesis? ]  
Unfortunately, the doctors also compiled a huge amount of knowledge about side effects and negative health effects. But that information was kept away from the athletes. All drugs were described as vitamins, given supposedly to make up for a lack of fresh fruits and vegetables. Side effects started quickly, and were typically explained to the athletes as part of puberty, or the flu. Among females the early side effects included deeper voices, facial hair (some teenage girls had to shave), fewer secondary sexual characteristics, and much higher chances of kidney failure. Later on the side effects became far more serious, including liver and lung problems, ovarian cysts, joint problems, depression, dramatic drops in bone density, and even worse.
China was plagued by a series of drug scandals in the 1990s. Thirty-two swimmers were caught using drugs and other Chinese athletes were stripped of medals. In a crackdown before the 2000 Sydney Olympics, China withdrew 40 athletes and officials from its team. They included six runners trained by famed women's track coach Ma Junren and Ma himself. "Ma's Army" was the name of his group of record-breaking female distance runners. He attributed their success partly to a diet including turtle blood soup and other exotic concoctions.