ESTROGEN
There are three forms of estrogen found in the human body. Estrone, estradiol and estriol, also known as E1, E2 and E3 respectively. Estradiol (E2) is the main estrogen produced by the ovaries. Estradiol (E2) is converted to Estrone (E1) . After menopause, this weak estrogen is the most abundant in the body. Estriol (E3) is a breakdown product of estradiol and is most abundant during pregnancy. Estriol may have anti-cancer effects. After menopause estradiol levels drop and estrone levels become the more abundant.
These three hormones are usual compounded together in forms such as Triest (All 3 hormones), and Biest (Estriol and Estradiol)
Estrogen should not be taken if a woman has:
-Vagina bleeding that cannot be explained
-Liver disease
-Cancer of breast or uterus
-Pregnancy
-History of blood clots of strokes (when taking hormones)