Estrogens PMS is caused by too much estrogen.
Women produce estrogen themselves from the follicles on their ovaries.
Estrogen is also produced by the fat cells. In fact, an obese women after menopause produces more estrogen than a skinny women before menopause. However, progesterone levels drop almost to zero compared to premenopause levels. Taking Natural Progesterone will resensitize the estrogen receptors to estrogen so that your body will become more sensitive to estrogen supplemements. By the third month the progestin may be completely stopped.