Our body produces DHEA or dehydroepiandrosterone compounds. It converts into male and female hormones, testosterone and estrogen. Testosterone and estrogen drive the effects of DHEA supplements after the conversion occurs. Decreased DHEA can lead to the development of several diseases. A study shows that DHEA decreases up to 80% throughout adulthood. However, this is not only about older people since DHEA starts to decrease at the age of 30.