Sexual Orientation May Be Set In The Womb

Scans See 'Gay Brain Differences'

The Swedish study, published in the Proceedings of the National Academy of Sciences journal, compared the size of the brain's halves in 90 adults. Gay men and heterosexual women had halves of a similar size, while the right side was bigger in lesbian women and heterosexual men. A UK scientist said this was evidence sexual orientation was set in the womb.