肿瘤发生是遗传因素与环境因素相互作用的结果.通常认为,在环境因素中,化学致癌物是主要的危险角色.因此,从预防角度考虑,防癌的途径主要有两条:其一是不接触环境化学致癌物.但这是不可能的,人们只能做到在日常生活中尽量少接触致癌物.其次,通过靶基因干预或调节.致癌物进入机 Tumor development is the result of the interaction of genetic factors and environmental factors. It is generally believed that chemical carcinogens are the major dangerous role in environmental factors. Therefore, from the perspective of prevention, there are two main approaches to cancer prevention: one is not Exposure to environmental chemical carcinogens. However, this is impossible. People can only do as little contact with carcinogens in their daily lives. Secondly, they can intervene or regulate through target genes. Carcinogens enter the machine.