The Peter Attia Drive · 2026-10-12 · 18 min · 3,264 words

#411 ‒ AMA #90: Strong convictions, loosely held: how Peter's views on fasting, keto, metformin, rapamycin, whole-body MRI, and exercise have changed

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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 peteratiamd.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 episode number ninety. In today's AMA, we're reflecting back on the first four hundred episodes of the drive.

with another episode of the uh strong convictions loosely held theme. So what do we do with this? Well we walk through some of the biggest positions I've taken. across the eight plus years of this podcast. But then we revisit them by basically asking, where have the data taken us? What's changed, if anything, and as a result of that, of course, where where am I today? So in this episode we're gonna talk about my evolving views on ketogenic diets.

extended fasting as a longevity intervention and the DR TR CR framework. why I stopped taking metformin for longevity and my shifting position on Rapamycin. whole body MRI and liquid biopsies for cancer screening, including YI think whole body MRI data quality has actually gotten worse over time and not better. how my approach to cardiorespiratory training

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