Source: www.the-hormonal-nightmare.com
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What Is The Difference Between A Woman's Hormones And Biologically Identical Hormones?
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The following illustration show the molecular structure of a woman’s estrogen on the left and biologically identical [bio–identical] estrogens on the right.
- Human Estrogens
- Biologically Identical [Bio–Identical] Estrogens

The following tables show the amounts of each type of estrogen that a woman’s body makes, and the amounts of each type of estrogen in compounded biologically identical [bio–identical] estrogens.
- Human Estrogens
- Tri–Est [all 3 estrogens]
- Estrone [E1]
- 10 – 20%
- Estrone
- 10 – 20%
- Estradiol [E2]
- 10 – 20%
- Estradiol
- 10 – 20%
- Estriol [E3]
- 60 – 80%
- Estriol
- 60 – 80%
- Human Estrogens
- Bi–Est [2 estrogens]
- Estradiol [E2]
- 10 – 20%
- Estradiol
- 20%
- Estriol [E3]
- 60 – 80%
- Estriol [E3]
- 80%
The following illustration show the molecular structure of a woman’s progesterone on the left and biologically identical [bio–identical] progesterone on the right.
- Human Progesterone
- Biologically Identical [Bio–Identical] Progesterone
As can be seen from the illustrations, biologically identical [bio–identical] estrogens and biologically identical [bio–identical] progesterone have exactly the same molecular structure as the estrogens and the progesterone that a woman’s body makes.
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