Oestradiol is produced in women of childbearing age, mostly by the ovaries. Oestriol is the main oestrogen produced during pregnancy, mostly in the placenta. Oestrone, produced by the adrenal glands and fatty tissue, is the only type of oestrogen produced after menopause.

How is estrogen produced in the body?

The ovaries, which produce a woman's eggs, are the main source of estrogen from your body. Your adrenal glands, located at the top of each kidney, make small amounts of this hormone, so does fat tissue. Estrogen moves through your blood and acts everywhere in your body.

What is oestrogen made from?

Oestrone is one of three types of oestrogen made by the body. The other types of oestrogen are called oestradiol and oestriol. Oestrone is primarily produced by the ovaries as well as by adipose tissue and the adrenal glands.