007 Is Homosexuality Natural?

This week we’re asking the potent question “Is homosexuality natural?” Do other animals display homosexual tendencies? Is there any scientific proof that it’s natural? Where does the claim come from? For the answers to these questions and many more, tune in!

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Blanchard R, ‘sexual orientation correlates with an individual’s number of older brothers’: https://www.ncbi.nlm.nih.gov/pubmed/11534970

Jerson, ‘homosexuality is associated with a preponderance of older brothers’: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3961213/

Blanchard R, ‘analysis showed that homosexuality was positively correlated with the proband’s number of older brothers’: https://www.ncbi.nlm.nih.gov/pubmed/8540587

Blanchard R, ‘Meta-analysis of aggregate data from 14 samples representing 10,143 male subjects shows that homosexuality in human males is predicted by higher numbers of older brother’: https://www.ncbi.nlm.nih.gov/pubmed/15302549

Blanchard R, ‘the fraternal birth order effect is the tendency for older brothers to increase the odds of homosexuality in later-born males’: https://www.ncbi.nlm.nih.gov/pubmed/28608293

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