Women runners must be tested for testosterone in Olympics

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For decades, the international governing body for track and field, IAAF, has been trying to figure out how to determine which athletes are so-called “normal” women and which aren’t. They have a new set of rules: a woman’s testosterone level must be measured. If it’s too high, she must reduce it medically, stop competing, or compete against men. The rules apply only to women running the 400, 800, and 1500 meter races.