Peptides 101: What They Are, Why Everyone's Talking About Them and My Honest Take as a Dietitian
Nutrition & Wellness

Peptides 101: What They Are, Why Everyone's Talking About Them and My Honest Take as a Dietitian

Jacquelyn Hackett, MS, RDN

Jacquelyn Hackett, MS, RDN

May 14, 2026

If I had a dollar for every time a client asked me about peptides in the last two years, I'd have funded my own clinical trial by now. The word is everywhere and the range of claims attached to it is staggering. So let's slow down, look at the actual science, and separate what's genuinely exciting from what's marketing magic. First Things First: What Even Is a Peptide? Peptides aren't exotic or new. Your body makes them constantly. A peptide is simply a short chain of amino acids, the same...

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Jacquelyn Hackett, MS, RDN

Jacquelyn Hackett, MS, RDN

Registered Dietitian, Functional Nutrition Practitioner, and founder of Hackett Health. Specializing in gut health, hormones, and root-cause investigation for women.

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