Peptide Therapy: What Doctors Want You to Know

Talk to your doctor before trying peptide therapy, especially if you're considering a product sold online.

By St. Vincent's Medical Center, Neighbor

Sep 3, 2026 4:03 PM EDT

This post was contributed by a community member.

Peptide injections are being promoted as a shortcut to faster recovery, easier weight loss and healthier aging.

While some have real medical uses, others come with big promises and very little proof.

"Peptide therapy can mean many different things, and not every product comes with the same level of research or oversight," says Joe Li, DO, with Hartford HealthCare Medical Group in Fairfield.

So, what is peptide therapy used for? And what should you know before trying it? >> Read more

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