It doesn't matter if it's wine or beer, the increased breast cancer risk from drinking three or more alcoholic drinks a day is similar to the increased breast cancer risk from smoking a packet of cigarettes or more a day.
Dr Arthur Klatsky said: “Population studies have consistently linked drinking alcohol to an increased risk of female breast cancer, but there has been little data, most of it conflicting, about an independent role played by the choice of beverage type.”
Dr Klatsky, adjunct investigator in the Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA, and his colleagues studied the drinking habits of 70,033 multi-ethnic women who had supplied information during health examinations between 1978-1985.