What do you believe causes homosexuality?
It obviously has a cause. Everything does.
Most Helpful Girl
It's a variety of factors and they're not completely sure what specifically causes it, but it seems to be influenced by genetics and hormones.
The only concrete scientific link I've heard of so far is that the more sons a woman has, the higher the likelihood her younger sons will be gay. They hypothesize this is due to estrogen exposure or the woman's body getting better at rejecting the unfamiliar (male) aspects of the fetus.2