A cutting-edge new book that reveals how foreign microbes might actually be good for us, contrary to past belief. The microorganisms that we have sought to eliminate have been supporting our ancestors for centuries. They comprise 90 percent of the cells in our bodies and yet we have significantly reduced their power, sparking an epidemic of new diseases, or superbugs. The Human Superorganism presents pioneering research and offers a blueprint for a revolution in public health, by going against what we always thought was true: that foreign microbes are bad for us.