<Tr> <Td_colspan="2"> Infobox references </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> </Tr> <P> Dehydroepiandrosterone (DHEA), also known as androstenolone, is an endogenous steroid hormone . It is one of the most abundant circulating steroids in humans, in whom it is produced in the adrenal glands, the gonads, and the brain, where it functions as a metabolic intermediate in the biosynthesis of the androgen and estrogen sex steroids . However, DHEA also has a variety of potential biological effects in its own right, binding to an array of nuclear and cell surface receptors, and acting as a neurosteroid and neurotrophin . </P> <P> In addition to its role as a natural hormone, DHEA is used as an over-the - counter supplement and medication; for information on DHEA as a supplement or medication, see the prasterone article . </P>

What type of chemicals are dhea and androstenedione