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Peptides are having a moment, but most people still can’t answer the basic question: what are they, and how do they actually affect your body? We bring on nutritional therapist Kevin Hall to translate the science into real-life terms and help you sort therapeutic peptides from supplement-store “peptides,” hype, and half-truths.

Kevin explains peptides as short amino acid chains that act like cellular signals, essentially the language your cells use to communicate. From there we dig into GLP-1 medications like semaglutide, why they can dramatically reduce appetite and “quiet the food noise,” and the big risk many people miss: if you’re eating less and not protecting protein intake, you can lose muscle right along with fat. We talk about why muscle is not a vanity metric in your 60s, 70s, and beyond, and how lean mass supports metabolism, immune strength, bone density, and long-term independence.

We also connect inflammation to the rest of the story. Kevin breaks down how chronic inflammation can drive cortisol, how that can feed insulin resistance and visceral fat, and why improvements in inflammation can ripple into markers people care about like cholesterol and blood pressure. Then we land on a practical, listener-friendly plan: the four foundations Kevin wants in place before anyone even thinks about peptides, including what to look for in a quality multivitamin, magnesium forms that absorb well, omega-3 EPA/DHA targets, and vitamin D3 with K2. We’re not giving medical advice, so please talk with your healthcare professional before starting peptides or changing supplements.

If this helped you think more clearly about peptides, GLP-1 weight loss, protein, and healthy aging, subscribe, share this with a friend, and leave us a review so more people can find it.