Uterus: The Gaymaker

This is an actual headline from the BBC: Womb environment ‘makes men gay’.
A new study says that “conditions in the womb” may be a contributing factor to men’s sexual orientation.
The short version: Older studies showed that the more older brothers a boy had, the more likely he was to be gay–though there was no identifiable reason for this. This new study out of Canada, which looked at families with both biological and non-biological brothers, says that the reasoning is more biological than social.

Professor Anthony Bogaert from Brock University in Ontario, Canada…found the link between the number of older brothers and homosexuality only existed when the siblings shared the same mother.

Ok, makes sense. Here’s where it gets weird (to me).

A woman’s body may see a male foetus as “foreign”, he says, prompting an immune reaction which may grow progressively stronger with each male child…The antibodies created may affect the developing male brain.

So basically the womb attacks males fetuses with gay rays. Seriously?
What really disturbs me about this this “uterus seeing a male fetus as foreign” thing is that it reminds me of this guy.
And naturally the larger question with all these why-are-you-gay studies is why do we have to know? I’m terrified that once someone targets a “reason” they’re just going to try and find a way to do away with it. (I guess they couldn’t do away with the all-mighty uterus though.)