People are turning themselves into lab rats': the injectable peptides craze sweeping the US Well actually The Guardian 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 FDA Is Expected to Lift Restriction on Peptides, Heeding RFK Jr.'s Wishes The New York Times FDA to weigh easing limits on unproven peptides favored by RFK Jr. and MAHA supporters PBS News