Adrienne Matei
Journalist covering lifestyle and wellness for The Guardian US, reporting on trends such as the craze for injectable peptides and their cultural drivers.
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Mar 17, 2026 • 18min
What’s behind the injectable peptide craze?
Dr Anna Barnard, Imperial College researcher on peptide therapeutics, and Adrienne Matei, lifestyle journalist at The Guardian US, explore the rise of grey‑market injectable peptides. They trace who uses them and why. They outline where these products come from and what peptides do. They discuss potential therapeutic directions and the safety, cultural and regulatory debates driving the craze.
