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Research demonstrates that collagen peptides working through TGF-/Smad3 pathway activation can reduce MMP-3, MMP-13, MMP-2, and MMP-9 activity while increasing procollagen synthesis, attenuating the collagen degradation characteristic of photoaged skin

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The enzymes in your stomach often break down glutathione before it can ever reach your bloodstream

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The dirty secret is a large majority of the drugs that come to market come from the NIH, and Phase 1 trials are done at the NIH