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UC Berkeley psychologist finds evdence that male hormones in the womb affect sexual orientation

w the mother's body remembers how many sons she has had and exposes each successive male fetus to more androgen.

"It is just mindboggling to think that some men are gay because of the number of boys their mothers had before their own birth. These events must register in the woman's body before an individual is even conceived."

Still, cautioned Breedlove, biology does not determine sexual orientation. The findings are statistical relationships, which means that many men and women do not fit the pattern.

"There are plenty of gay men who are first-borns, many straight men with older brothers and many women whose fingers give no clue to their sexual orientation," he said. "This is not a test to be used on your friends and neighbors."


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Contact: Patricia McBroom
510-642-3734
University of California - Berkeley
28-Mar-2000


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