... orientation Mental Illness 2016; volume 8:6591 A link between maternal thyroid hormone and sexual orientation? Jeffrey Mullen University of California, Irvine, CA, USA The search for the cause of gender nonconformity and homosexuality has been extensive. Researchers have proposed a variety of different...

... test). The association was also significant for each sex (P<0.0001, by Fisher's exact test). There is evidence that thyroid gland plays a crucial and decisive role in determining sexual orientation in people. Maternal thyroid dysfunctions during pregnancy may result in homosexual orientation...