Associate Director, HIV Center for Clinical and Behavioral Studies at the New York State Psychiatric Institute and Columbia University
Pro to the question "Is Sexual Orientation Determined at Birth?"
"46,XX individuals with classical congenital adrenal hyperplasia (CAH) due to deficiency of the enzyme, 21-hydroxylase, show variable degrees of masculinization of body and behavior due to excess adrenal androgen production...Bisexual/homosexual orientation was (modestly) correlated with global measures of masculinization of non-sexual behavior and predicted independently by the degree of both prenatal androgenization and masculinization of childhood behavior. We conclude that the findings support a sexual-differentiation perspective involving prenatal androgens on the development of sexual orientation."
Cowritten with C. Dolezal, S.W. Baker, and M.I. New, "Sexual Orientation in Women with Classical or Non-Classical Congenital Adrenal Hyperplasia as a Function of Degree of Prenatal Androgen Excess," Archives of Sexual Behavior, Feb. 2008