The researchers said they searched three major research databases and analyzed a decade of published literature on collagen peptides, skin aging, and the molecular mechanisms connecting the two. The review's authors argued that previous research has focused too narrowly on well-known signaling pathways related to collagen production, and in doing so may have missed a more complete picture of how collagen peptides act inside cells. A review of this type synthesizes existing studies rather than running new experiments, according to the article.
