Fine article over at The Boston Globe
on what might make people gay or straight
. The writer doesn't hesitate to mention why the debate about this has important political/social ramifications either, which is a nice change. There's also a pretty decent overview of recent scientific studies on the issue.
There is one other thing I wish the article had covered, however. It discusses the "evolutionary paradox" of homosexuality - that is, the fact that gay people are much less likely to produce children using their own genetic material. This is (1) not a bad thing and (2) changing, but generally it holds, and from an evolutionary
perspective it's a drawback; of course, humanity is so firmly established on the Earth that we don't exactly have to struggle to survive (not en masse, anyway). But link that to something like this:Canadian researchers have consistently documented a "big-brother effect," finding that the chances of a boy being gay increase with each additional older brother he has.
Might it be that one of the reasons a person might be born homosexual is because evolutionarily speaking overpopulation is bad for us? That is, could this be a mild, evolutionarily adaptive curb on our constant reproduction in cases where there are too many people for the enviroment?
It's just a random idea that occurred while reading the article, and I don't think it says anything either good or bad about homosexuals, but it might be interesting to research more fully.