癌症的预防王天根由于我国社会稳定和经济发展，居民保健有所改善，人均期望寿命随之延长，老年人口比例日渐加大，又加以传染病日渐减少，医疗诊断技术不断进步，癌症病人更多地被诊断出来，使我国居民的死因结构发生了改变，许多地方癌症死亡已居总死因的第二位或第三位... Prevention of Cancer Wang Tiangen, due to social stability and economic development in China, improved health care for residents, prolonged life expectancy per capita, increased proportion of elderly population, reduced infectious diseases, continuous improvement in medical diagnostic technologies, and more cancer patients. It was diagnosed and caused the structure of the cause of death of our residents to change. Many local cancer deaths have ranked second or third in the total cause of death...