Book excerpt: This book provides an overview of bidirectional communication between gut-microbiome-brain, pathways, nutrients, and metabolites that are involved in microbiota gut-brain axis (MGBA) interactions. Further it reviews the relevance of this axis in the neurological disorders and potential therapeutic interventions, involving gut microbiome or probiotics and prebiotics which can ameliorate the neurological disorders. The book examines the role of gut microbiota in the establishment and hemostasis of innate immune response and explores the possibility of development of microbiome-targeted therapeutic interventions. Notably, the book discusses the role of the gut microbiota and immune system on the maintenance of brain functions and the development of neurological disorders. It also highlights the recent advances in improving neurological diseases by phytochemicals, prebiotics and probiotics. This book is useful for researchers working in neuropharmacology, Clinical Research, toxicology, neurodegeneration, and stroke biology.