In interviews, Zevon described a lifelong phobia of doctors and said he seldom consulted one. He had started working out, and he looked physically fit. Shortly before playing at the Edmonton Folk Music Festival in 2002, he started feeling dizzy and developed a chronic cough. After a period of suffering with pain and shortness of breath, Zevon was encouraged by his dentist to see a physician; he was diagnosed with pleural mesothelioma, a cancer (usually caused by exposure to asbestos) that affects the pleura, a thin membrane around the lungs and chest lining. Zevon was deeply shaken by the news and began drinking again after 17 years of sobriety.