Have you ever heard it said that homosexuality is not natural? Well, as it turns out, homosexual behavior has been observed in 1500 animal species to date. Ducks and geese mate for life, and approximately 5% of duck and goose couples are gay. Perhaps even more interesting than that, the entire species of dwarf chimpanzees is bisexual.
Science can also be applied to homosexuality in humans. Statistically, only 8% of humans have a counter-clockwise hair whorl, while 23% of homosexuals have a counter-clockwise hair whorl. Having older brothers may also be an indicator of homosexuality- the likelihood of being gay increases for men by 33% for every older brother they have. A mother’s body may actually fight during pregnancy for a daughter if she already has sons, which is thought to contribute to this trend.
It is estimated that 10% of the population is gay, though some estimates range from 3.4-20%. There’s still a lot to discover, but the science of gay is definitely there. Check out this infographic for more.