There is increasing evidence that mental health problems such as schizophrenia, depression and anxiety are linked with poor nutrition. At present, very few psychiatrists provide nutritional advice for their patients, despite such advice complimenting drug and psychological therapies. This edited volume is the first book to provide a comprehensive overview of the relationship between nutrition and mental health, for mental health professionals. Featuring contributions from leading authorities in the field, the book examines the link between diet and the microbiome-gut brain axis and how this correlates with a variety of psychiatric disorders. The book explores how enhancing the beneficial bacteria in the gut, through the use of psychobiotics, prebiotics or dietary change can improve mood and reduce anxiety. The book will appeal to psychiatrists and psychologists, behavioral scientists, neuroscientists and nutritionists.