Estrogens are female sex hormones. These hormones are produced in the ovaries, but also in the adrenal glands and are derived from cholesterol. There are three different types of estrogens naturally occurring.
First, there is estrone or E1, a hormone derived from progesterone. This is the type of estrogen that is found in smaller amounts in the body compared to the other types.
Secondly, there is estradiol or E2 synthesized from testosterone.
Finally, there is estriol or E3 which is of particular importance during pregnancy. This type of estrogen informs the status of the fetus and placenta.
Read the full article on: What are Estrogens? Types, Functions and Drugs ( 25).
By Guillermo Quea Campos M.D. (gynecologist), Laura García de Miguel M.D., M.Sc. (gynecologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Sergio Rogel Cayetano M.D. (gynecologist), Zaira Salvador B.Sc., M.Sc. (embryologist) and Romina Packan (invitra staff).
Last Update: 05/19/2023