Soy Neurotoxicity?

Tim Tyler tim at
Wed Oct 8 02:56:18 EST 2003

In Survivor <Survivor at> wrote or quoted:


> 4) Phosphatidylserine is often recommended for early-stage memory
> problems, such as those "I know the word; it's at the tip of my
> tongue, but I can't recall it" phenomena.  
> I'm told Phosphatidylserine has a history of use in Europe as a
> treatment for Alzheimer's Disease as well, though I don't know the
> research, if any, that supports this use. 
> The point is this -- Phosphatidylserine is now derived, almost
> exclusively, from soybeans and is often packaged with
> Phosphatidylcholine, Phosphatidylethanolamine, and
> Phosphatidylinositol, other soybean derivatives. [...]
> So tofu from soybeans is bad, but Phosphatidylserine from soybeans
> might be good? Seems premature to start avoiding all soy products. 

The more suspect elements in the Soy bean are usually thought to be the
phytoestrogens: Daidzein, Genistein, Glycitein, Formononetin, etc.

Purified extracts of soy phospholipid cocktails should not contain those.
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