RE: specific amino acid restriction does the same thing as calorie restriction?

From: Harvey Newstrom (mail@HarveyNewstrom.com)
Date: Sun Apr 20 2003 - 10:02:16 MDT

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    Hal Finney wrote,
    > My understanding is that most proteins are broken down
    > essentially all the way into their constituent amino
    > acids during the digestion process.
    >
    > Based on this, I wouldn't expect much difference between eating animal
    > or vegetable protein in terms of whether or where proteins are reused
    > or torn down.

    I partially agree. The idea that veggie proteins are built up from scratch
    more than animal proteins probably doesn't pan out. However, the idea that
    vegetarians create more aminos out of other aminos (because they are not all
    provided in the diet) still seems valid to me. I still think vegetarians
    create more aminos while carnivores absorb more aminos.

    However, after more thought, I am not sure if this helps avoid protein
    damage or promote protein recycling. Protein damage may occur after the
    protein is built. Or, it may occur in the essential aminos that must come
    from pre-existing sources and not as much in newly created aminos. Or it
    may be mostly caused by protein-folding defects that have little to do with
    how the amino chains are constructed. We just don't know enough about this
    type of protein damage, or how protein restriction helps.

    In general, I do like creating more of my own aminos and utilizing less of
    pre-existing aminos.

    --
    Harvey Newstrom, CISSP, IAM, GSEC
    <www.HarveyNewstrom.com>
    


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