When studying mental illness, the brain has long been the focal organ of interest. Psychiatry and neurobiology examine communication from the brain and how its chemical imbalance produces central nervous system (CNS) disorders such as depression and anxiety. However, microbiology presents a new avenue of inquiry that is looking from the opposite direction: how is communication to the brain affecting mental health? This is a provocative question under investigation through recent studies of the microbiota of our gut. Continue reading “Does your gut control your brain?”