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The Proof

New microbiome science | Dr Tim Spector

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6 Apr 2026 · 1h 25m

Nutrition basicsGut health

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In this episode, I return to a conversation I promised to continue - sitting back down with Prof Tim Spector, MD, to explore everything that has changed in microbiome science since Episode 224. Tim and the ZOE team have now published a landmark Nature paper with 34,000 microbiome samples, run a clinical trial comparing personalized nutrition against government guidelines, and Tim has published a book on fermentation science. We cover why most probiotics are scientifically obsolete, a...

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