There were two surprises about the record number of athletes--24, compared with the previous high of 12, at the 1984 Los Angeles Games--forced out of the Olympics by drug tests: Half were women (including weightlifter Sanamacha Chanu of India, inset), and many were caught using substances popular 20 years ago. "Some of the less-sophisticated athletes and coaches must have decided we're so focused on the hot new drugs that they don't believe we're still testing for [older ones]," said one doping expert working the Games.

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