Humans have numerous microorganisms residing in the body, especially in the gut, far exceeding the human body's normal mammalian cells. Recent research links the gut microbiome, the population of microorganisms living in the gastrointestinal tract, with brain diseases. This volume explores the concept and possibility of its extension to manage a galaxy of CNS diseases, including Parkinson's, Alzheimer's, Autism spectrum disorders, depression, insomnia, and chronic fatigue syndrome. This volume elaborates about communication channels between gut and brain via the vagus nerve, short-chain fatty...