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From: Ryan (
Subject:         Re: Soy and Alzheimers Disease
Date: August 14, 2008 at 11:45 am PST

In Reply to: Re: Soy and Alzheimers Disease posted by TomOfMaine on August 14, 2008 at 7:44 am:

I appreciate your response. Personally, I do not feel that all variables have been controlled for and that further study would be needed to draw any conclusions(To rule out things like Aluminum content, genetic factors, Formaldehyde in the tofu, etc...). I have spoken with a couple of fellow scientists and science students about the quality of the science behind these studies and most have expressed some concern with the first study (in Hawaii). I will admit that I need to take a closer look at the Indonesia study myself (I plan to do so tomorrow when I am on campus).

As far as the Aluminum is concerned, I have read that a medical doctor centered in Honolulu, who is affiliated with this site (His name escapes me) took samples of locally made tofu in for chemical analysis and found significantly higher Aluminum content in the tofu samples than that of tofu produced in the continental US. Unfortunately (and I would like to reiterate that this is not my field), as I understand it, Aluminum has not been scientifically confirmed to be a cause of Alzheimer's, so its hard to draw the conclusion that the dementia in the Honolulu study was caused by Aluminum. Perhaps new research has emerged which established causation but last I heard this was not the case (On a personal note- I avoid Aluminum as much as possible just in case, in spite of the fact that research is inconclusive.).

I had not heard of Tofu in Indonesia being treated with Formaldehyde as you mention. This is very interesting (and troubling) to me and I will certainly be looking into it.

I want to reiterate that there is not enough data to confirm that Tofu is evil, but in light of this newly emerging evidence which is beginning to resemble credible science, I could not in good conscience say nothing after shooting down the oppositions arguments before (here and elsewhere- the Soy is evil debate is something that participate in quite often) and arguing that I had seen no credible science suggesting that soy is harmful to health. The unfortunate truth with long term studies such as these is that it takes another long term multi-year study to confirm or debunk them. In the mean time we are sort of left hanging.

One point that I certainly appreciate your bringing to light is the dementia-mad cow link. I have heard this but have not seen a study personally. I have also read that meat eating appears to show a strong correlation with incidence of Alzheimer's disease. Either way you cut it- Tofu or not- I believe vegetarianism as a whole to be a better life-style.

If anybody on this board has background in this field, your perspective would be very appreciated.

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