Photo: Gay Men, Straight Women Have Similar Brains

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Activity within the brain's amygdala—an almond-shaped structure inside each brain hemisphere that is associated with processing and storing emotions—were compared between homosexuals and heterosexuals of both genders (above).

The results showed that the brains of straight men and lesbians as well as and straight women and gay men share similar characteristics.

Image courtesy of National Academy of Sciences, PNAS (copyright 2008)

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