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Experts Warn: Self-Administered Peptides Risky Amid FDA Review

4/17/2026

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Summary

Story summary

A rising number of Americans self-administer peptides purchased online, often without understanding their contents.
Pinchas Cohen, a scientist at the University of Southern California, warns that peptides should be used only under medical supervision.
Cohen's lab identifies MOTS-c, a peptide with ties to Jewish tradition.
The FDA is considering easing restrictions on peptide injections.

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Story summary

A rising number of Americans self-administer peptides purchased online, often without understanding their contents.
Pinchas Cohen, a scientist at the University of Southern California, warns that peptides should be used only under medical supervision.
Cohen's lab identifies MOTS-c, a peptide with ties to Jewish tradition.
The FDA is considering easing restrictions on peptide injections.