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The Matt Walker Podcast

The Matt Walker Podcast

Dr. Matt Walker

The Matt Walker Podcast is all about sleep, the brain, and the body. Matt is a Professor of Neuroscience at the University of California, Berkeley. He is the author of the book, Why We Sleep and has given a few TED talks. Matt is an awkward British nerd who adores science and the communication of science to the public.

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Matt explores a revolutionary shift in sleep science, identifying the gut microbiome as a secondary control center for rest. He elucidates the bidirectional gut-brain axis, where the Vagus nerve connects trillions of microorganisms to the brainstem, and details how bacterial metabolites, specifically the short-chain fatty acid butyrate, trigger critical BDNF-TrkB signaling to orchestrate deep NREM sleep. Using Parkinson’s disease as a model, he demonstrates how gut dysbiosis undermines sleep ...