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Estrogen
Estrogen:  A hormone produced by the ovaries. Luteinizing Hormone (LH) and Follicle Stimulating Hormone (FSH) control production of sex hormones (estrogen and testosterone) as well as sperm and egg maturation and release.  Also known as Estradiol (E2), estrogen is critical for female reproductive and sexual functioning and for bone structure. Estrogen, like other steroids, is derived from cholesterol.  Learn more.