Differences in digit ratios between gay men who prefer receptive versus insertive sex roles indicate a role for prenatal androgen

Abstract excerpt

Among non-human mammals, exposure to androgens during critical periods of development leads to gynephilia (attraction to females), whereas the absence or low levels of prenatal androgens leads to androphilia (attraction to males). However, in humans, retrospective markers of prenatal androgens have only been associated with gynephilia among women, but not with androphilia among men. Here, we asked whether an...

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