Everyone online is suddenly injecting peptides. But almost nobody understands the scienceor the regulation. The FDA recently shifted several peptides off the Category 2 safety risk list tied to compounding rules. First, that BPC 157: Miracle Healing Peptide or Hidden Danger? Peptides are surging in popularity. There's little evidence that they work. FDA Is Expected to Lift Restriction on Peptides, Heeding RFK Jr.'s Wishes The New York Times