Does GHK Cu Really Work? 40 Years of Research Reviewed Unraveling the AMPK SIRT1 FOXO Pathway: The In Depth Analysis and Breakthrough Prospects of Oxidative Stress Induced Diseases Viral claim says GHK Cu reset nearly 4,000 genes to a younger state and increased collagen production in a preclinical study. This refers to research on GHK Cu, a naturally occurring copper binding peptide that Relief of ovalbumin induced airway remodeling by the glycyl l histidyl l lysine Cu2+ tripeptide complex via activation of SIRT1 in airway epithelial cells ScienceDirect