Translations:Östrogene/1/en

Estrogens are the female sex hormones. The most important estrogens are estrogen, estradiol and estrone. Estrogens are mainly produced in the ovaries, but also in the placenta (placenta), in the adrenal glandcortex and in small amounts in the male testicles. Estrogens play an important role especially in the first half of the female cycle. The estrogen levels in the blood fluctuate enormously during the course of the cycle.