Who's using peptides and do we know what's in them?

There's reportedly a major uptick in the number of people using or interested in peptides - injectable protein building-blocks.You may have seen them on your social media feed linked to marketing that says they can ease joint pain, improve muscle recovery or for skin care.But large parts of the peptides market are unregulated. What do we know about who is using peptides, what they contain and the evidence base for the benefits they purport to give?GuestDr Tim Piatkowski, NHMRC Emerging Leadership Fellow, School of Public Health, University of QueenslandReferencesResponding to injectable synthetic peptide use among young people: priorities for clinicians and public health