
Collagen: What It Can and Cannot Do
The digestion argument against it turns out to be partly wrong — but the reason it works is not the reason it is sold.
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The digestion argument against it turns out to be partly wrong — but the reason it works is not the reason it is sold.

The role in collagen synthesis and immune function is settled. The claims made for high-dose intravenous protocols are a separate question with much weaker support.