Testosterone and Breast Enlargement: Possible new support of "Androgens in Human Evolution"


James Michael H

Testosterone and Breast Enlargement: New Support of "Androgens in Human Evolution,"

I just found the following citation which may add support to my contention that enlarged breasts in
human females may come from the extra testosterone that human females produce. Testosterone levels
are higher in human males and females than chimpanzee males and females respectively.

Int J Impot Res. 2004 Jan;16(1):95-7. Treatment of testosterone-induced gynecomastia with the
aromatase inhibitor, anastrozole.

Rhoden EL, Morgentaler A.

1Division of Urology, Beth Israel Deaconess Medical Center, Men's Health Boston, Harvard Medical
School, Massachusetts, USA.

Gynecomastia is an unusual side effect associated with testosterone replacement therapy (TRT) that
has been traditionally treated with surgery, radiation, or discontinuation of testosterone
supplementation. We report here our experience with two cases of gynecomastia in men undergoing TRT
who were successfully treated with the aromatase inhibitor anastrozole.