Menopausal women use progesterone in hormone replacement therapy, women who experience PMS (premenstrual syndrome) also respond well to natural progesterone. Progesterone is known to aid conception and is also produced through out pregnancy. Progesterone plays a lot of roles in women the chief of which is to balance the effects of estrogen, if estrogen is not checked it results in the symptoms listed under estrogen dominance. During menopause the level of progesterone may drop to almost zero in some women while that of estrogen drops to about 40-60% which is still okay to put an end to the menstrual cycle. The use of progesterone after menopause would help to argument the overall hormone balance, because progesterone is the precursor to a lot of steroid hormones.