为什么人只要活着就会得癌症？

　　参考文献

　　[1]https://www.cancer.org/cancer/cancer-causes.html
[2]https://www.medicalnewstoday.com/articles/323648

　　[3]https://www.medicalnewstoday.com/articles/325178

　　[4]Yuan C， Morales-Oyarvide V， Babic A，et al.Cigarette Smoking and Pancreatic Cancer Survival.J Clin Oncol. 2017 Mar 30.

　　[5]Rehm J, Shield K. Alcohol consumption. In: Stewart BW, Wild CB, eds. World Cancer Report 2014. Lyon, France: International Agency for Research on Cancer; 2014.

　　[6]《Global patterns in excess body weight and the associated cancer burden》

　　[7]《Excess body weight responsible for nearly four percent of cancers worldwide》

　　[8]https://www.cancer.org/latest-news/sitting-time-linked-to-higher-risk-of-death-from-all-causes.html

　　作者 | 欢欢

　　来源 | 医学界癌友会