Between four and 30 per cent of cancer deaths worldwide could come down to alcohol use - eight per cent for the commonest of these, breast cancer. Crucially even moderate drinking increases our risk. Even one glass a day increases the risk of breast cancer by four per cent, while heavy drinking - three or more drinks a day - increases it by a whopping 40-50 per cent.It's no secret that alcohol consumption can cause major health problems, including cirrhosis of the liver and injuries sustained in automobile accidents. But if you think liver disease and car crashes are the only health risks posed by drinking, think again: Researchers have linked alcohol consumption to more than 60 diseases.