Researchers at the University of Virginia have just published news of their work elucidating the mechanism whereby drinking a glass of red wine 3-4 times a week can help starve cancer cells. They report that drinking more than this can increase the risk of cancer however. For full details see http://www.healthsystem.virginia.edu/internet/news/Archives04/red-wine-and-cancer.cfm.
Thank you to the emeritus professor of UVA who is a faithful follower of this site who drew my attention to this discovery described by him as "good news for some, bad news for most of us wine drinkers".