“There is strong evidence that alcohol causes cancer at seven sites in the body and probably others,” Connor said. “Even without complete knowledge of biological mechanisms [of how alcohol causes cancer], the epidemiological evidence can support the judgment that alcohol causes cancer of the oropharynx, larynx, oesophagus, liver, colon, rectum and breast.”
Growing evidence suggested that alcohol was also likely to cause skin, prostate and pancreatic cancer, she added. Emphasising that a drinker’s risk increased in relation to the amount consumed, Connor said: “For all these there is a dose-response relationship.”
Connor arrived at her conclusions after studying reviews undertaken over the past 10 years by the World Cancer Research Fund, the International Agency for Research on Cancer, the World Health Organisation’s cancer body, and other authoritative bodies.
https://www.theguardian.com/society/2016/jul/22/alcohol-direct-cause-seven-forms-of-cancer-study