Can gay people change their sexual orientation or gender identity? - See more at
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You of course can't change it, anymore than you can make a straight person gay. Sexual attraction is a very complicated combination of genetics, environment, epigenetics, etc. I don't think you would be any more successful at changing someone's sexual orientation through genetic therapies than you would be at changing one's bone structure - it's too deeply embedded in the brain and in our body's physical chemistry.
Agreed–I feel like there's an infinite number of variables that contribute to homosexuality--and the one thing I can say is that it's natural. It occurs at a relatively uncommon (compared to heterosexuality), but constant rate. It happens in wildlife and humans--I don't think we could ever learn enough about what "causes" homosexuality to ever be able to change it. And then again, why would we need to? It's never going to overtake heterosexuality but it's never going away either--it's constant. Sexuality, (and by that I mean true, willing attraction to whatever it is you're attracted to) cannot be taught. Behaviors can be taught, but behaviors don't say everything about what's going on inside the brain. True sexual identification can only happen individually–you can never see inside someone's brain to see if their sexual experience is exactly the same as yours, even if you both identify the same way. As each person learns to understand the world differently, they come to understand themselves differently, and (what we categorize as) sexuality follows. It just is, and we're all trying to describe our experience. Our labels (homo/hetero/bi/a/pan/every other type of sexuality) are just a categorization of external behaviors, but inside each of our brains, it's much much more complex and and no two humans are alike. That's why I don't think it can or should ever try to be changed.