[Crucial]

Homosexuality seems to be a congenital defect. Studying twins and identifying one twin that is homosexual and the other heterosexual in multiple instances proves it is not genetic. Brain structure differs in homosexuals by whatever causes the defect.

[Do the math]

I know a few biologist that believe that the defect is caused by some unnatural chemical imbalance in the brain. Enzymes and amino acids are the key to the future of medicine.