Did you know that the trillions of bacteria in the human gut have a surprisingly big impact on our mental health? This week, Trauma Report writer Sharon Bae speaks with Dr. Ted Dinan - University College Cork professor, psychiatrist, co-author of The Psychobiotic Revolution, and lead investigator at the APC Microbiome Ireland Research Centre. They discuss the microbiome-gut-brain axis, its relationship with mental health, and what the gut-brain connection means for the future of mental health intervention.