Study suggests males with older brother more likely to be gay

A team of researchers from the University of Toronto, the Institute of Sexology and Sexual Medicine, Charité – Universitätsmedizin Berlin and the University of Lethbridge has found evidence showing that males with an older brother have a greater chance of being gay than males that do not. In their paper published in the journal Proceedings of the Royal Society B, the group describes their study of data from past research efforts and what the learned from it.

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