What is a Peptide, Really?

Send us Fan Mail Recommended next listen: In Conversation: Daniel Tausan — Peptides, GLP-1s, and Stress Peptides seem to be everywhere. They're discussed in conversations about healing, GLP-1 medications, hormones, healthy aging, and longevity—but if someone asked you to explain what a peptide actually is, could you? After recording my conversation with Daniel Tausan, I realized we spent nearly an hour discussing what peptides do without ever stopping to answer that first, foundational question. In this episode, we slow things down. Rather than focusing on specific peptides or whether you should use them, we build a framework for understanding what peptides are, how they differ from proteins and hormones, and why scientists have become so interested in them over the past decade. More importantly, we'll explore a much bigger idea: your body is constantly communicating with itself through chemical signals, and peptides are one part of that remarkable conversation. By the end of this episode you'll understand: • What peptides actually are—and what they aren't • How peptides relate to amino acids and proteins • Why the word "peptide" doesn't tell you what something does • Why scientists view peptides as biological signals rather than magic solutions • Why understanding this changes the way we think about modern medicine If you'd like to hear these ideas applied to healing, hormone production, GLP-1 medications, stress, and healthy aging, be sure to listen to my conversation with Daniel Tausan after this episode. Uncommonly Remarkable℠ is a health and wellness show focused on understanding how the body works and how everyday choices shape long-term health. I’m Artis Beatty, a doctor of optometry and Chief Medical Officer at MyEyeDr. While my professional background informs how I think, the perspectives shared here are my own.