DHEA, or dehydroepiandrosterone, is a hormone produced by the adrenal glands. It serves as a precursor to male and female sex hormones, such as testosterone and estrogen. DHEA levels peak in early adulthood and gradually decline with age, which has led to interest in its potential effects on aging and health. Some people take DHEA supplements in hopes of improving energy, mood, or muscle strength. However, scientific evidence on the benefits and risks of supplementation is mixed, and it is important to consult a healthcare professional before starting any new supplement regimen.