[quote] Lesbians’ brains react differently to sex hormones than those of heterosexual women, new research indicates.
That’s in line with an earlier study that had indicated gay men’s brain responses were different from straight men — though the difference for men was more pronounced than has now been found in women. * * *
In both cases the findings add weight to the idea that homosexuality has a physical basis and is not learned behavior.
“It shows sexual orientation may very well have a different basis between men and women … this is not just a mirror image situation,” said Sandra Witelson, an expert on brain anatomy and sexual orientation at the Michael G. DeGroote School of Medicine at McMaster University in Hamilton, Ontario.
“The important thing is to be open to the likely situation that there are biological factors that contribute to sexual orientation,” added Witelson, who was not part of the research team. [end quote]
Study Suggests Difference in Lesbians’ Brains – Yahoo! News.
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