DHEA is a steroid hormone is called the “Mother Hormone” because it can be converted to other vital hormones, such as estrogen, testosterone, progesterone, etc. Levels of DHEA drop off dramatically after age 30, and scientists feel this may be one reason for aging. DHEA is involved in a variety of health areas and testing for DHEA levels is recommended before taking as a supplement. Our DHEA is in a 99.5% pure form.