Estrogen (estrone, estriol and estradiol) is an important hormone for sexual development and reproduction. It is responsible for female secondary sex characteristics and helps to regulate the menstrual cycle along with progesterone. Some of the roles of estrogen include bone formation, blood clotting, tissue growth, mood regulation and surprisingly, sound processing. As with all hormones, a delicate balance must be maintained for optional functioning and estrogen is frequently thrown out of...