We hear a lot about improving gut health through food, probiotics, and supplements. But after more than a decade of major advances in microbiome research, the picture has become both more promising and more complex including about gut bacteria, biological symptoms In this episode, I’m joined by gastroenterologist and neuroscientist Dr. Emeran Mayer to explore how our understanding of the gut-brain connection has evolved—and what we may still be getting wrong. 0:00 Introduction and Dr. Emeran Mayer’s background 1:07 The impact of gut health on disease and current treatment approaches 2:17 The microbiome problem in America and research evolution 4:03 Challenges and limitations in microbiome research 5:13 Traditional and novel interventions for gut health 6:25 Future of bioengineered probiotics and research funding 8:09 Functional medicine approaches and case study 9:40 Bridging gaps in gastroenterology and historical context 12:24 Flaws in reductionist science and traditional medicine insights 14:09 Microbiome’s role in overall health and physiology 19:25 Microbial metabolites and modern challenges to gut health 21:10 Human biology vs. microbial adaptation and caring for the microbiome 22:59 The Mayer Model for microbiome health 29:04 Brain-gut communication 31:33 AI’s potential in advancing microbiome research 36:22 Aging and its effects on the microbiome 46:03 Practical steps for microbiome health: prebiotics and polyphenols 55:44 Factors harming the microbiome and using it for treatment 57:45 Gut-body communication and influence on traditional medicine 1:00:25 Future directions: research, applications, and health policy 1:02:56 Final thoughts on holistic health and The Mayer Model