NYT: What Qualifies a Woman to Compete as a Woman? An Ugly Fight Resumes

Chand, a sprinter from India, and women like her were excluded because their bodies produced a high amount of testosterone. It was often so high it was classified as being within the male range, a situation the authorities considered an unfair advantage. The only way these women could compete, track and field officials ruled, was if they took hormone-suppressing drugs or had surgery to limit the amount of testosterone their bodies produced.

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At its core, the sports world — rigidly separating men and women — will perpetually struggle to adapt to increasingly nuanced gender distinctions. In June, the District of Columbia became the first jurisdiction in the United States to offer an “X” gender, signifying a neutral gender, on its driver’s licenses. In March, a transgender New Zealand woman crushed her competition in her first international weight-lifting meet, and a transgender boy won a Texas state championship in girls’ wrestling.