There is a new study that claims that with every older brother a boy has, it increases the likelihood of the boy being gay by 33%. And a boy with 11 older brothers would have a 50/50 chance of being gay. This study is leading scientists to hypothesize that something must remain in the womb after every time a male son is born to change the chemical conditions in the womb for future male siblings, affecting their sexual preference. Interesting. That is not the same hypothesis that I quickly come to.