One of the most talked about pieces of dietary news to arise in recent years is that red wine is good for your health. Dr. Oz says part of the reason is the alcohol and part is resveratrol, a powerful antioxidant that comes from the skins of grapes. Vintners add the grape skins back to make red wine, but they don't do the same process for white wine—so white wine has no resveratrol benefit.
Learn the truth about Oprah, Dr. Oz and claims about resveratrol.
"Resveratrol does one other thing," Dr. Oz says. "It turns on a system in your body that prevents your cells from aging. Now think about it. Where do they grow these grapes? On trees on hillsides, right? It's not a very hospitable environment. So those grapes are sending a signal to us that life might not be so good, so why not turn on that cellular chemistry that you have that allows you to live longer and better? That's why we think this has a benefit."
If you don't want the alcohol, Dr. Oz says you can get some resveratrol from Concord grape juice or other dark grape juices, but you won't get as much benefit as you would from red wine. "Eighty percent of the benefit of the wine is actually the alcohol, and 20 percent is the resveratrol," Dr. Oz says. "So it's the combination that makes red wine so valuable."
Of course, moderation is the key when drinking to your health. Dr. Oz says most people should drink about one glass of red wine a day, though some men can drink slightly more because males metabolize alcohol more effectively than females.