In this fascinating interview with Dr. Emeran Mayer, gastroenterologist and Professor in the Departments of Medicine, Physiology and Psychiatry at the David Geffen School of Medicine at UCLA, find out about the factors that impact our gut microbiome, and how our gut plays an essential role in neurodegenerative diseases, neurodevelopment disorders, anxiety and mood, and how we can improve our gut microbiome for better mental health.