Natpro and soya ingredient

Dear Wray, I can't find the site link to post questions. I hope this is correct.

You answer someone's question (Aug 31, 2010) about yam based progesterone cream by writing about how it was shown not to have a key ingredient in prog increase. But Natpro has "progesterone, made from stigmasterol, which is extracted from the soya bean." I am very confused and concerned. I had a very estrogen receptor positive breast cancer, and I have been advised to stay away from all things soy based for its estrogenic properties. How is it that Natpro doesn't pose these risks? Thanks much.

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Natpro and soya ingredient

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Sep 01, 2010
 Natpro and soya ingredient
by: Wray

Hi there Yes this is correct place. Any 'yam cream' contains only diosgenin, which the body cannot convert to progesterone, this has to be done in a lab. So although the progesterone comes from soy beans, there is no soy in the cream, only progesterone. Plants such as the soy bean, Dioscorea species of yams, fenugreek and many more, contain phytosterols, two such are stigmasterol and diosgenin. As these sterols have a similar molecular structure to progesterone, they are used as starting points for the bio-synthesis of progesterone. This is then further broken down to oestrogen, testosterone, cortisol etc for use in HRT, testosterone replacement, cortisone etc. The final product cannot contain anything but progesterone, if it did it could not be classified as progesterone and would not be given USP approval. Hope this helps Take care Wray

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