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Contributes to healthy aging

35 reported that the plasma concentration of citrulline (which is exclusively synthesized from glutamine and proline by enterocytes in most mammals including humans and pigs) was a reliable marker for the mass and metabolic activity of the small bowel in short bowel patients

Copper peptides are more about long-term skin quality than immediate visible results

10.1093/ajcn/78.3.640S 44 DeLisiC.PatrinosA.MacCrackenM.DrellD.AnnasG.ArkinA.et al

[DOI] [PMC free article] [PubMed] [Google Scholar] 62.Sun L., Wu Q., Mao X