This is not quite true.
Hurdity x
Estrone (E1) is the main type of estrogen present in the body after menopause, made primarily in adipose tissue. Estradiol (E2) is the strongest estrogen, made by the ovaries and present in the body before menopause. Estriol (E3) is the weakest estrogen, present in the body primarily during pregnancy
https://www.va.gov/WHOLEHEALTHLIBRARY/tools/estrogen-dominance.asp#:~:text=Estrone%20(E1)%20is%20the%20main,the%20body%20primarily%20during%20pregnancy.
But because you don’t trust Americans
, here is Britaninica for you.
Estriol, the weakest of the estrogens, is formed from both estrone and estradiol.
https://www.britannica.com/science/estrogenI personally can’t take any Estradiol products because of that reason, Estradiol is too strong for my body. Doctors call that hormonal sensitivity, with no explanation why and how it happens. So I have to work it out myself.
I mentioned on this forum before, Gina, which contains Estradiol nearly killed me, but Blissel Estriol gel makes magical good things to me. The same thing happens, when I use estrogel and Wellsprings on skin, estrogel (Estradiol) makes me ill (it causes symptoms like I have too much estrogen in my body, despite the estrogen level is extremely low) and Wellsprings (estriol) makes me feel good and happy.