http://www.theguardian.com/society/2015/dec/18/cancer-risk-factors-environmental-study-finds
Citando:
"Environmental factors are overwhelmingly to blame for some forms of cancer, according to a new study.
Among the contributors are diet, sun exposure, UV radiation, tobacco, alcohol, the human papilloma virus and hepatitis B and C. These factors impacted between 70% and 90% of several types of cancer, including lung, colorectal, skin and cervical, said Yusuf Hannun, a cancer researcher at Stony Brook University in New York."