The body produces the hormone dehydroepiandrosterone (DHEA) in the adrenal glands. In turn, DHEA helps produce other hormones, including testosterone and estrogen. Natural DHEA levels peak in adulthood and then decline as you age. DHEA can be supplemented directly, either in pill form or as a topical cream.

Many people claim that DHEA supplements can improve sex drive, build muscle, fight aging, and improve certain health conditions. But there is little scientific evidence to support this, and DHEA supplements come with some risks if used incorrectly.