Transgender identity might be genetically determined, according to results from the world's largest study of transwomen. It’s possible – although far from proven - that these genetic changes may alter the levels of sex hormones that determine gender identity in the developing brain.

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Transgender identity might be genetically determined, according to results from the world's largest study of transwomen. It’s possible – although far from proven - that these genetic changes may alter the levels of sex hormones that determine gender identity in the developing brain.