The GH IGF 1 axis in obesity: pathophysiology and therapeutic considerations Nature Reviews Endocrinology Pediatric Implications of Normal Insulin GH IGF Axis Physiology Endotext NCBI Bookshelf Peptides Results Ghkcu TikTok How GHK Peptide Works Signaling GHK acts as a switch for skin repair: Interacts with adenosine receptors reduces inflammation Activates MAPK ERK, PI3K Akt, TGF pathways Stimulates fibroblasts & keratinocytes boosts collagen, elastin The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline