It is an unfortunate fact of life that lung cancer affects many people. The most common cause of lung cancer is long term exposure to tobacco smoke. The occurrence of lung cancer in non-smokers accounts for less than ten percent of cases. These cases appear to be due to a combination of genetic factors, radon gas, asbestos, and air pollution, including second-hand smoke. It can be treated with surgery, chemotherapy or radiotherapy, but the prognosis is rarely good and the five year survival rate is only fourteen percent. If you would like to find out more information about lung cancer and other lung diseases then you would be recommended to visit www.lungdiseases.info. This site offers sponsored links to other sources of information relation to lung cancer and other diseases such as emphysema, pulmonary lung disease and interstitial lung disease. If you have any concerns regarding your health, or the health of a loved one, then the symptoms’ of lung disease would be worth looking at.