I once asked the same question regarding soy to a cancer survivor who had been raising chickens much longer than I had. We were talking about sharing a lot of organic chicken feed. It had organic soy in it, and she still didn't want any soy even if it was organic. She was adament about avoiding soy at all costs. I didn't know she was a cancer survivor at the time, but she told me the standar phytic acid and GMO stuff, but later I was referred to an insightful book.
In the book, "Nutritional Rudiments in Cancer" by S.M. Jones M.D PhD. indicates, "Trophoblast (irregular cell division) cell is brought into being by a chain reaction which involves estrogen or other steroid hormones, then it would follow logically that an unnaturally high exposure to these substances would be a factor that favored the onset of cancer."
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So I too, now avoid soy in my diet and I don't feed it to my chickens either and I definitely wouldn't be giving soy formula to babies. Soy free seems is a trend that may be in our best interests. Although supposed experts and claiming the estrogen in soy is NOT human estrogen, it is plant based estrogen and not as bad as it is being portrayed. However studies definitely conclude the estrogen in soy does block estrogen receptors. I have continued to read more about soy and it's place in our bodies, believe it is something we shouldn't be eating even if it is organic. [/FONT]
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Here is a webpage I created with various links to the studies on soy and which are the reason I believe we would all be better off avoiding soy completely:[/FONT]
http://www.phoenixorganicfeed.com/why-no-soy.html
Hope someone find this helpful.
SB