The future of gut health

Microbiologist Justin Sonnenburg wants you to know that you – and all humans, really – are not alone. Inside each of us live uncountable bacteria without whom we could not survive. Nowhere is this symbiosis more vital, Sonnenburg says, than in the digestive tract – the gut – where trillions of bacterial collaborators help digest the foods that nourish us. Sonnenburg studies what makes this complex relationship work and how modern life is altering this important chemistry. He says the gut microbiome should be thought of as another organ. When it drifts out of balance, the effects ripple through our metabolism, our immune systems, and our nervous systems. Sonnenburg goes on to explain how dietary choices – like eating more fermented foods and fiber – can rebuild the microbiome, and why the field’s next frontier could help alleviate chronic disease. “It really is a full-body impact that our microbes are having,” Sonnenburg tells host Russ Altman on this episode of Stanford Engineering’s The Future of Everything podcast.Have a question for Russ? Send it our way in writing or via voice memo, and it might be featured on an upcoming episode. Please introduce yourself, let us know where you're listening from, and share your question. You can send questions to thefutureofeverything@stanford.edu.Episode Reference Links:Stanford Profile: Justin SonnenburgLearn more about the Sonnenburg LabConnect With Us:Episode Transcripts >>> The Future of Everything WebsiteConnect with Russ >>> Threads / Bluesky / MastodonConnect with School of Engineering >>> Twitter/X / Instagram / LinkedIn / FacebookChapters:(00:00:00) IntroductionRuss Altman introduces guest Justin Sonnenburg, a professor of microbiology and immunology at Stanford University.(00:03:08) Path into Microbiome ResearchHow Sonnenburg became interested in the friendly microbes that live in and on the body.(00:04:26) Bacteria as PartnersWhat are gut bacteria and how do they function in our bodies?(00:06:23) Full-Body EffectsHow gut microbes affect metabolism, immunity, and the brain.(00:08:27) Industrialized MicrobiomesWhat does it mean that the gut microbiome has been “industrialized”?(00:12:08) Feeding the MicrobiomeWhy is fiber important for gut health?(00:15:59) Fiber ResponseStudy results from Stanford reflecting individual responses to fiber.(00:17:14) Fermented FoodsHow foods like yogurt, kimchi, sauerkraut, and kombucha can support microbiome diversity.(00:20:36) Microbiome TherapeuticsHow diet and microbial interventions could improve health.(00:23:00) Food, Equity, and AccessWhy microbiome health may require practical tools that work beyond major diet changes.(00:24:02) Sharing MicrobesHow social environments, diet, and exposure may influence the microbes people acquire.(00:25:30) Precision HealthHow the microbiome could help tune immunity, metabolism, and disease treatment.(00:27:32) Women’s HealthWhy reproductive health and women’s health are promising areas for microbiome research.(00:28:33) Stanford Microbiome ResearchHow Stanford researchers are building interdisciplinary tools, tests, and therapies for microbiome science.(00:30:36) Future In a MinuteRapid-fire Q&A: microbiome health, daily decisions, and reversing Western disease trends.(00:33:04) Conclusion Connect With Us:Episode Transcripts >>> The Future of Everything WebsiteConnect with Russ >>> Threads / Bluesky / MastodonConnect with School of Engineering >>>Twitter/X / Instagram / LinkedIn / Facebook Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.