Alcohol is again in the news because of a study reported in the BMJ (British Medical Journal). About 10% of male cancers and 3% of female cancers are "attributable to alcohol consumption" in European countries including UK. They include mouth, gullet, liver, large bowel, and breast.
Should we worry ? My opinion remains that if you enjoy a drink, continue in moderation
The article is available online (http://www.bmj.com/content/342/bmj.d1584.full), but it's not easy reading.