People are turning themselves into lab rats': the injectable peptides craze sweeping the US Well actually The Guardian Peptides are a HUGE category. Were talking about everything from insulin to GLP 1s Some are incredibly well researched and FDA approved., But in the injury recovery world? Thats where it gets a Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications, and Future Perspectives What are peptides? The treatments promising weight loss and better skin, explained Vox A closer look at the unapproved peptide injections promoted by influencers and celebrities king5.com