Estradiol (E2) is by far the most potent of the estrogens and drives the development of both the sexual and reproductive functions and organs; It is dominant in reproductive yearsEstriol (E3) is the dominant estrogen during pregnancyEstrone (E1) is the dominant estrogen during the post-menopausal wise woman yearsThough these estrogens are produced mainly in the ovaries and in the placenta, their m