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Rod,a 50-year-old straight man from Jacksonville asks: Could sexual orientation be genetically pushed by excessive male or female hormones during pregnancy? Columnist Phillip Milano moderates this week's topic.
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Could sexual orientation be genetically pushed by excessive male or female hormones during pregnancy?
Rod, 50, straight, Jacksonville
Replies
It could be hormonal, but we've had homosexual people around since history began to be written down and kept track of. There are also gay animal groups that don't eat anything in order to alter their hormones. It could be an in-utero hormonal issue, but not one caused by the pill (or only by the pill). . . . I also read about a study that said hormones produced during pregnancy could cause homosexuality if there is too much or too little. The study was on humans, but the experimenting was on rats.
Dina Marie, 19, bisexual, Chicago
Possibly. A person's sexual orientation is normally determined at or before birth. Hormonal conditions in the mother may determine this. The theory for gay men is that male fetuses who develop in the presence of higher-than-average levels of male hormones like androgen are more likely to be gay. They are, in a sense "hyper-masculine."
Gordon, Salt Lake City, Utah
If that were the case, then the population of gays should have skyrocketed after the pill was introduced given the number of women who used the pill. Also, it wouldn't explain why there were gays before the pill was introduced or explain why there are gays like me who are children of good Catholic parents who didn't use birth control pills.
Shelly, 49, bisexual, Pennsylvania
No. Not sure what else to say. What, did your preacher use that line to justify his Neanderthal stance on birth control or something?
Ann, 38, straight, Kansas City, Mo.
Experts say
In recent years, folks who find stuff out about folks who are queer as folk (and since it's a premium cable channel show reference, you don't know if we're culturally literate, homophobic or both) have been finding out yet more stuff that points to biological contributors to sexual orientation:
- Men who have several older biological brothers are a bit more likely to be gay than men who don't, according to a study reported in 2006 in Proceedings of the National Academy of Sciences by human sexuality researcher Anthony F. Bogaert of Brock University in Canada. It could be because the boys' mom develops some type of immune response to succeeding male fetuses, though another theory is that the youngest brother might get exposed to more androgens like testosterone while in the womb.
- Men's index fingers are generally shorter than their ring fingers, while women's are usually about the same length. This likely has to do with higher testosterone levels in males, which affects the length of their extremities in different ways (keep this in mind as you read further down). But lesbians' index fingers also tend to be shorter than their ring fingers - unlike straight women - and that may mean lesbians are hit with more prenatal androgens, too, according to research by Michigan State University neuroscience professor Marc Breedlove and colleagues.
A different study found that gay men's index fingers are a lot more shorter (did we just write that?) than their ring fingers - even more shorter (again with that?) than straight men's are, write researchers Glenn Wilson and Qazi Rahman in their book, Born Gay. Again, the "more prenatal testosterone" thing might be at work.
- Testosterone in the womb may affect a different extremity in men as well. That particular extremity was found to average about 1/3 inch longer in gay men (6.32 inches) than straight men, researcher Bogaert found, when he and Scott Hershberger of California State University-Long Beach looked at archived data collected in the Kinsey Report from 1938-1963.
Scientists don't know why there's a difference, but according to an article in the Los Angeles Times in June, some speculate that gay men might be exposed to more testosterone early on in the womb, leading to that certain enhanced extremity, but then they receive lower levels later in the womb, possibly causing more feminine characteristics such as attraction to men.
Continue cross-cultural dialogue at www.yforum.com, or mail questions and replies to Phillip Milano, Times-Union, P.O. Box 1949, Jacksonville, FL 32231.
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