what are peptides

What Are Peptides? A Plain-English Guide

A peptide is a short chain of amino acids. Most definitions say 2 to 50 amino acids, linked by peptide bonds. Longer chains are called polypeptides or proteins. Your body makes peptides all day. Insulin, oxytocin and endorphins are peptides, and so are prescription drugs like semaglutide (Ozempic, Wegovy). You’ve probably seen the word on …

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