Just read this long, loooong article
about research on homosexuality. Here are the points I found interesting:
- While post-birth development may well play a supporting role, the roots of homosexuality, at least in men, appear to be in place by the time a child is born.
- Homosexuality runs in families - studies show that 8 to 12 percent of brothers of gay men are also gay, compared with the 2 to 4 percent of the general population.
- There is a "big-brother effect": the chances of a boy being gay increase with each additional older brother he has. A male with three older brothers is three times more likely to be gay than one with no older brothers. (For the record I am the eldest in my family.)
- Amherst College biologist Paul Ewald argued that homosexuality might be caused by a virus - a pathogen most likely working in utero. That argument caused a stir when he and a colleague proposed it six years ago, but with no research done to test it, it remains just another theory.
- A study last year by researchers in Italy showed that female relatives of gay men tended to be more fertile, though, as critics point out, not nearly fertile enough to make up for the gay man's lack of offspring.
- The UCLA lab is examining how gay genes might be turned "up" or "down." In studying the genes of gay sheep, for example, (the scientist) found some that are turned "way up" compared with the straight rams.’ (I am going to use the phrase “I am so turned way up like a gay ram”.)
- This is a research field built on “underfunded, idiosyncratic studies that are met with full-barreled responses from opposing and well-funded advocacy groups.”