"When the option is a long life with a disease or a short one without it, evolution opts for disease almost every time. With fascinating insights and cutting-edge research, Dr. Moalem examines our evolutionary history and reveals how many of the conditions that are diseases today actually gave our ancestors a leg up in the survival sweepstakes. He demonstrates just how little modern medicine really understands about human health, and offers a new way of thinking that can help us live longer, healthier lives. "