This book addresses important issues regarding the interaction between the nervous system, the immune system, and the digestive system. Gut flora has a profound influence on the shaping of the immune response, not only in the gastrointestinal system but also in the nervous system. Fascinatingly, manipulation of intestinal immune responses can be used to modulate neurological disease. Conversely, the nervous system and the psyche have significant effects on the functioning of the gut and liver. After introductory chapters on the neurology, the immunology and microbiology of the gut, the effects of the gut immune system and gut flora and its manipulation on neurological disease are discussed, followed by molecular mimicry and immune tolerance in neuroimmune diseases. Additionally, several chapters deal with gastrointestinal manifestations of neurological diseases. Neuro-Immuno-Gastroenterology is aimed at neurologists, gastroenterologists, and immunologists. Cris S Constantinescu graduated from Boston University School of Medicine and completed a PhD in Immunology at the University of Pennsylvania. He completed training in Neurology and Fellowship in Neuroimmunology at the University of Pennsylvania. His main research interest is in the immunopathogenesis and the immunotherapeutics of multiple sclerosis, and in neuroimmune interactions. He is currently Professor and Chair of Clinical Neurology in the Division of Clinical Neuroscience at the University of Nottingham in the United Kingdom. Razvan Arsenescu received his Ph.D. degree from The University of Kentucky College of Medicine – Microbiology, Immunology & Molecular Genetics – and his medical degree from The University of Medicine and Pharmacy Tg. Mures, Romania. Currently, he is the Chief of Atlantic Digestive Health Institute and Director of Atlantic Inflammatory Bowel Diseases Center in Morristown, NJ, USA. Violeta Arsenescu received her Ph.D. degree from The University of Kentucky College of Medicine – Graduate Center for Nutritional Sciences, and her medical degree from The University of Medicine and Pharmacy Tg. Mures, Romania. Currently, she is the Director of Medical Nutrition Consulting at Armedica LLC.