Frontiers Dual Characters of GH IGF1 Signaling Pathways in Radiotherapy and Post radiotherapy Repair of Cancers Everyone's calling GHK Cu a miracle peptide But let's separate marketing from mechanism. GHK Cu isn't magic. It's a signal. A signal that: Supports tissue repair Modulates inflammation Enhances collagen + The relations between GH, IGF 1, Klotho, inflammation and Download Scientific Diagram Pediatric Implications of Normal Insulin GH IGF Axis Physiology Endotext NCBI Bookshelf GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026)