癌症是严重危胁人民生命健康的一种常见症,它是怎样发生的?目前虽然在许多根本问题上还说不清楚,但世界各国医学界对它都做了大量的研究工作,积累了丰富资料,并在某些领域取得了突破性进展,相信人类征服癌症的日子不会很远了。防治肿瘤的经验告诉我们,只要我们在日常生活中预防外源性致癌因素,比如不吃含有致癌因子 Cancer is a common disease that seriously threatens the life and health of the people. How does it happen? At present, although it is unclear on many fundamental issues, the medical circles in the world have done a lot of research on it and have accumulated rich Data, and in some areas made a breakthrough, I believe that the human race to conquer the cancer will not be far off. Cancer prevention and control experience tells us that as long as we prevent exogenous carcinogenic factors in daily life, such as do not eat containing carcinogenic factors