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From: Leslie (
Subject:         Re: Soy and IGF-1
Date: November 20, 2006 at 1:02 pm PST

In Reply to: Soy and IGF-1 posted by Tina on November 6, 2006 at 8:10 pm:

Although I don't think eating a huge amount of "fake" soy products with isolated soy protein is such a great idea, I see no reason to completely eliminate tofu, soymilk, tempeh, miso from your diet. My diet, at least.

Keep in mind the link between IGF whatever and cancer is not made in this argument. Did you read the China Study? According to Dr. Campbell, cancer cell growth was started or stopped by the amount of casein (milk protein), starting at 5% protein level, but the same results were not found with soy or wheat protein -- up to 20% level.

So what do you make of that? Making the leap between IGF and cancer and therefore saying soy causes cancer is a huge leap without scientific basis.

I still think that soy isolate may have problems, we just don't know because it hasn't been consumed for a long time, contrary to closer to nature soy products which have been consumed for many centuries in other cultures; it's just the amount of soy products that is in question but you must take all studies and results with a grain of salt.

The fact is that many substances, when removed from their whole source are not the same as consuming a whole food. Consider beta-carotene, which in supplement form increased lung cancer, although eating lots of beta carotene in the form of carrots and sweet potatoes has the opposite effect.

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