随着我国经济的发展,人民生活水平明显提高,寿命显著延长。但是应引起注意的是恶性肿瘤的发病率明显上升,每年约有200万人被诊断为恶性肿瘤,同时恶性肿瘤的死亡率高居不下。通过科学研究及有效控制活动表明,恶性肿瘤是可以避免的。1/3恶性肿瘤可以通过预防而不发病;1/3恶性肿瘤 With the development of our country’s economy, people’s living standards have improved significantly and their lives have been significantly extended. However, it should be noted that the incidence of malignant tumors has increased significantly. About 2 million people are diagnosed as malignant tumors each year, and the mortality rate of malignant tumors remains high. Through scientific research and effective control activities, malignant tumors can be avoided. One-third of malignant tumors can be prevented without disease; 1/3 malignant tumors