Estrogen: These three chemicals make up human estrogen.
Estradiol (E1)-80% of a woman’s estrogen
The estrogen that has the most volume in the body is estriol (60-80% of circulating estrogens), followed by estradiol and estrone (10-20% each). Estriol is thought to be the weakest acting hormone, but provides a natural hormonal balance in the body, whereas estradiol and estrone are thought be the stronger estrogens. The female body produces large amounts of estriol during pregnancy and has protective properties against such things as estrogen related cancers. Estradiol is the estrogen that can relieve vaso-motor symptoms the best. Estrone is the primary estrogen found in post-menopausal women. It stores it self in the body fat and has more know cancer properties. :
Estradiol is produced directly in the ovaries, estrone is produced from estradiol, and estriol is produced in large amounts during pregnancy. Estradiol is the most potent of the three estrogens.
Other functions of Estrogen:
progesterone is made in the ovaries after ovulation. progesterone keeps the estrogen in check by preventing the overgrowth of endometrium, protects against fibrocystic disease.
Symptoms of Estrogen deficiency