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 stimulates the growth of tissue, such as development of breast and reproductive organs, and ensures their function. In the brain, it boosts the synthesis and function of neurotransmitters that affect sleep, mood, memory, libido, and cognitive factors such as learning and attention span.

Estrogen decreases the perception of pain, preserves bone mass, and increases HDL – the good cholesterol. It also preserves the elasticity and moisture content of the skin, dilates blood vessels, and prevents plaque formation in blood vessel walls.

Estrogen should not be taken if a woman has:

-Vaginal bleeding that cannot be explained

-Liver disease

-Cancer of breast or uterus

-Pregnancy

-History of blood clots of strokes (when taking hormones)

Read my blog (Under archives, Feb 14th. Also Dec 13th, 10th and 6th) for some of the benefits taking oestrogen gives women.