In this book the recent advancements in understanding the gut-brain interaction as well as gut microbiome and how this interaction plays a vital role in human health and disease are discussed. Each chapter gives an analysis of questions, research directions, and methods within the field of gut-brain axis. The readers will benefit from the latest knowledge about our understanding about how gut-brain axis and modulation of gut microbiome determines predisposition to neurological disorders. The multidisciplinary book is essential reading for anyone interested in the field of gut-brain axis and gut microbiome: from undergraduates to graduate students as well as scientists and physicians having an interest in the new exciting field of gut microbiome and its relationship with brain function.