As you probably know, Preg is the precursor to DHEA, which is the precursor to Test and Estrogen, and Preg is also the Precursor to Cortisol and Progesterone. I use it for the same reasons that I used to use DHEA, declining hormonal levels and imbalance that come with age.Thought it has'nt been as extensively studied as DHEA,the avaliable data suggests to me that it's a good general health addition as the most basic avaliable hormonal balancer.