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Gay brains similar to opposite-sex straight brains

Study looks at brain shape, sexual orientation

Swedish researchers claim a new study shows more biological connections to sexual orientation.

In a study released to NewScientist.com Jun 16, researchers at Stockholm’s Karolinska Institutet examined the physical structure of straight and gay brains, and found some striking similarities.

But by no means does the study settle the debate within the scientific and sociological communities about sexuality and the roles that biology and social circumstance play in determining one’s orientation.

MRI scans of 90 volunteers suggest that straight men’s brains and gay women’s brains are similar in shape and volume — they’re assymetrical and slightly larger on the right-side. The scans also suggest that brains of both gay men and straight women are symmetrical.

Ivanka Savic, co-author of the study, claims these differences were likely created during pregnancy or shortly after birth.

“That was the whole point of the study, to show parameters that differ, but which couldn’t be altered by learning or cognitive processes,” she claims.

Read more: Gay brains structured like those of opposite sex — NewScientist.com