> The premise is that some proteins have an adverse
> effect *before*
> they are disassembled, and/or some proteins are
> never in fact
> completely broken down to aminos. When there is an
> actual food
> allergy, the protein is causing it before it is
> digested, just by
> contact with cells in the digestive tract. But for
> various
> reasons, other proteins resist complete proteolysis
> and thus
> leave polypeptide residues, and these cause the
> mischief.

This begs a couple more questions. Why would the body
not just discard these? Is it because it can't
recognize them? I find it hard to believe that a
process capable of breaking a complex protein molecule
down into individual amino acids would not have a
mechanism to eliminate what I would consider "waste".
Unless it is unable to determine that is is, in fact,
waste.

> This is a tougher one.  It is *possible*, I suppose,
> that if an
> animal is grain-fed, some of the grain protein is
> not fully
> digested,

The presupposes that the animal's digestive system
would not properly handle the grain protein. Is there
evidence that this is so?

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