Dehydroepiandrosterone (DHEA) is a steroid hormone, mainly produced in the adrenal glands. It functions as a precursor to male and female sex hormones, including testosterone and estrogen.WebMD. (n.d.). DHEA Supplements: Uses and Side Effects. [online] Available at: https://www.webmd.com/diet/dhea-supplements#1-2 [Accessed 15 Nov. 2018].