Lung cancer is the most common cancer affecting the industrialized world and affects the lives of thousands of people, including patients\' friends and family, every year. The most common cause of lung cancer is long-term exposure to tobacco smoke. The occurrence of lung cancer in non-smokers, who account for as many as 15% of cases, is often attributed to a combination of genetic factors, radon gas, asbestos, and air pollution, including secondhand smoke. The aim of this book is to give, in a clear and simple way, succinct information about all aspects of this type of cancer, with a stress on the practical side of its treatment. The book also details how care is likely to be organized and what patients can do to help themselves, both if they have the disease and also how to stop smoking. Fully updated for this third edition, the book includes information on getting the best treatment and living with cancer, both of which are new approaches to the disease in the UK.