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Peptides are all over social media and the news. Here’s what to know about them. - Harvard T.H. Chan School of Public Health

·Oct 1, 2026
Source: Harvard T.H. Chan School of Public Health
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Photo credit : Photo illustration showing vial with liquid, with influencer images visible through the liquid. Photo illustration: Ben Wallace / Harvard Chan School. Source images: iStock and Instagram.

On social media, in gossip columns, and in news headlines, synthetic peptides are being touted for their ability to do things like boost athletic performance and muscle growth, increase fat loss, and enhance sexual function. But are these claims true? And are peptides safe? S. Bryn Austin, professor in the Department of Social and Behavioral Sciences at Harvard T. H. Chan School of Public Health and an expert on supplements and health, weighs in.

Q: We’ve been hearing a lot about peptides these days. What exactly are they?

This article is an excerpt. To read the full content, visit the original source. Harvard T.H. Chan School of Public Health

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