This guide suggests treating forms of mental illness with nutritional medicine and also aims to improve general memory, mental performance and emotional balance. The author explains possible ways of conquering anxiety, depression and schizophrenia; delinquency, attention deficit disorder, autism and learning difficulties; and addictions, anorexia, insomnia and senility. Holford demonstrates the close connection between nutrition and mental health, and how to improve performance through smart nutrients, de-toxifying the brain and delivering optimum brain nutrition.