What is estrogen

Estrogen, also known as female hormones, can promote the performance of female genitals and secondary sexual characteristics, but also maintain normal sexual desire and reproductive function hormones, estrogen is secreted by ovarian follicular cells, pregnancy, placenta will also secrete estrogen, mainly estradiol, and inactivated in the liver, can be converted to estriol and estrone, during pregnancy, placenta can also secrete estriol. At the same time, estrogen has the effect of promoting the development of secondary sexual characteristics. Mammals can change the filter cells after ovulation into corpus luteum, secrete progesterone of the second estrogen, and further promote the development and maturity of secondary sexual characteristics. When female endocrine disorders occur, estrogen levels are often used as an important examination.