Pregnenolone is the mother hormone that is a precursor that gives rise to a cascade of other hormones, including DHEA, Progesterone, Estrogen, Testosterone, Cortisol, and more. It is the first, therefore most versatile in this important cascade. Pregnenolone and its sulfate belong to a family of neurosteroids so they are not only protective of the neurological system but they may help support the memory and cognitive function as we age.