The immune system holds the key to human health. In The Beautiful Cure, leading immunologist Daniel Davis describes the scientific quest to understand how it works - and how it is affected by stress, sleep, age and our state of mind - and explains how this knowledge is now unlocking a revolutionary new approach to medicine and well-being. The body's ability to fight disease and heal itself is one of the great mysteries and marvels of nature. But within the last few years painstaking research has resulted in major advances in our understanding of this breathtakingly beautiful inner world: a vast and intricate network of specialist cells, regulatory proteins and dedicated genes that are continually protecting our bodies. Far more powerful than any medicine ever invented, it also plays a crucial role in our daily lives. Already we have found ways to harness these natural defences to create breakthrough drugs and so-called immunotherapies that help us fight cancer, diabetes, arthritis and many age-related diseases, and we are starting to understand whether or not activities such as mindfulness might play a role in enhancing our physical resilience. Written by an expert at the forefront of this adventure, The Beautiful Cure tells a dramatic story of detective work and discovery, of puzzles solved and of the mysteries that remain, of lives sacrificed and saved, introducing the reader to this revelatory new understanding of the human body and what it takes to be healthy.