英语：Long-term smoking or years of breathing other people's smoke can cause lung In addition，atmospheric pollution， occupational factors， chronic lung diseases and the internal factors of the human body（genetic factors） can also lead to lung Lung cancer can be prevented and Reserch has shown that morbidity and mortality of lung cancer in western developed countries has fallen by smoking cantrol and environmental protection in recent Ban smoking and control of smoking， protect the environment， reduce the sxposure of occupation carcinogen， increase fruits and vegetables in the These measures can prevent the lung 汉语：长期吸烟或被动吸烟会导致肺癌。另外，大气的污染，职业因素，慢性肺部疾病和人体内部因素（遗传等）也同样会导致肺癌的发生。肺癌是可以预防并控制的。已有研究表明：西方发达国家通过控烟和保护环境后，近年来肺癌的发病率和死亡率已明显下降。禁烟控烟，保护环境，减少职业致癌物暴露，增加是食物中的蔬菜和水果等。这些措施可以有效预防肺癌。
