The peptide world just got loud. Last week, RFK Jr. said roughly 14 peptides may come off the FDA's Category 2 restricted compounding pathway and move back toward legal pharmacy compounding. That Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not Your body adapts. Peptides are no exception. Why you should cycle: Receptor desensitization (diminishing returns) Natural production suppression (for some peptides) Side effect accumulation Cost efficiency (use when