New government guidelines claiming a link between alcohol and cancer won't have a direct impact on drinking, but they do raise awareness of harm and so may alter social attitudes towards alcohol, according to an editorial in The BMJ.
Professor Theresa Marteau, Director of the Behaviour and Health Research Unit at the University of Cambridge and a member of the committee that produced the guidelines, concedes there is no evidence about any impact of health related guidelines on behavior, including for alcohol, risk information is still worth a try.