BERLIN, Germany (CNN) -- Heidi Krieger proved herself one of the world's top athletes in the 1980s, winning medal after medal in the shot put for East Germany. Andreas Krieger says his body changed soon after he began taking what coaches said were vitamins. Andreas Krieger says his body changed soon after he began taking what coaches said were vitamins. Now, the former sports star looks disdainfully at the awards, dismissing them as "doping medals" and honors that turned a woman into a man. Heidi Krieger, the 1986 European women's shot-put champion, became Andreas Krieger after a sex-change operation in...