The Peter Attia Drive · 2026-06-29 · 10 min · 1,678 words

#398 ‒ AMA #86: GLP-1 RAs and muscle loss: new data, better questions, and how to preserve muscle during weight loss

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Hey everyone, welcome to a sneak peek Ask Me Anything or AMA episode of the Drive Podcast. I'm your host, Peter Atia. At the end of this short episode, I'll explain how you can access the AMA episodes in full, along with a ton of other membership benefits we've created. Or you can learn more now by going to peteratiya md.com forward slash subscribe. So without further delay, here's today's sneak peek of the Ask Me Anything episode. Welcome to Ask Me Anything AMA.

Episode eighty six. In today's AMA, we're gonna look at the effects of GLP one receptor Agonists. So these are drugs like Ozempic, Bagovy, and Zet bound. But specifically, we're gonna look at the impact they have on muscle. We're gonna talk about how much lean mass people actually lose on these drugs and how that compares to weight loss by any other means. We're gonna define exactly what lean mass is and how loss of lean mass on DEXA

can actually mislead us. How these drugs impact bone mass and fracture risk. the all important effects of these drugs on strength and physical function, which probably should be the most important metric. The effect of these drugs on different fat depots across the body. Who's at most risk. for lean mass loss.

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