Wine? Why, when there is plenty of good vodka and rum available???
Apparently, there are complex natural anti-oxidents and other helpful naturally produced chemicals in red wine that are not present in white wine or distilled spirits. There are some folks who claim that good old grape juice (the dark kind I got as a kid) will have the same effect. Don't know of any studies that support this.
This is what heard also. I recommend Spanish
Rioja When I was stationed in Rota, Spain my intake of Rioja wines went up considerably when I found them in the Super Mercado at a really good price. The year was 1988 and I was buying 1975 vintage wines for cheap, excellent value. BTW, during this time my cholesterol level dropped to 132 which was probably a result of eating a typical Mediterranean diet, little to no dairy, olive oil -- I felt great. Just about any Red from the French Bordeaux region are good too.
California Reds: I prefer Cabernet and Merlot wines, but go for the smaller wineries you've never heard of. Quality over quantity.