Estrogen is a primary female sex hormone responsible for the regulation of the reproductive system and secondary sexual characteristics. It plays a crucial role in the menstrual cycle and pregnancy.
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Estrogen is produced mainly by the ovaries, but also by the adrenal glands and fat tissues.
It helps regulate the menstrual cycle by controlling the growth of the uterine lining.
During pregnancy, estrogen levels rise significantly to support fetal development.
Estrogen influences bone density, cardiovascular health, and skin elasticity.
There are three main types of estrogen in humans: estradiol, estrone, and estriol.