In the news

Wine wars

            Recent headlines: Wine has health benefits. Red wine in moderation is good for the heart. Any amount of alcohol is unhealthy. Why I stopped drinking alcohol.

            There is overwhelming evidence that wine – and I’m excluding for this discussion beer and liquor, for several reasons that will be part of a future blog – has properties, mainly in the form of phytochemicals, that benefit the heart. First, it has anti-inflammatory properties. Because inflammation is a driver of heart disease, stroke, cancer, and osteoporosis, the thousands (yes thousands) of plant-based phytonutrients in every glass of wine could be expected to have health benefits. One of these phytochemicals is resveratrol, a chemical formed in the skin of red/purple grapes that protects the fruit against fungal growth and lowers the harmful form (LDL) of cholesterol in humans. Ingredients in wine also inhibit the blood clotting system, providing another mechanism for protecting the heart and the brain. Some phytochemicals also protect DNA from damage, thus limiting the development of cancers.  

            Several studies in recent years have denied the benefit of these effects, pointing out that even small amounts of alcohol, less than a glass of wine per day, are associated with a shortened lifespan. A drawback of some studies is that they rely on self-reporting, that is, the research subjects gave a falsely low estimate of their wine intake. Because having on average more than two drinks a day is associated with health problems that include high blood pressure and cancer, it thus may appear that even moderate drinking is harmful. The hazards of such studies are well-known, revealing the tendency of people to understate their wine or food intake, often by margins of fifty to one hundred percent. At least one recent positive study relied instead on the measurement of a chemical in the subjects’ urine that accurately provided data on actual wine intake and showed that in a particular population, those who drank about one glass of wine per day had a fifty percent lower risk of heart disease.

            One study showed that exercising several days a week actually offset the harmful effects of alcohol. As a daily exerciser and daily wine drinker I’d love to see that study confirmed!

            But is it the wine that leads to less heart disease and other conditions? Maybe not. Only occasionally mentioned in these studies is the fact that wine drinkers simply have a healthier lifestyle than persons who don’t drink at all, or who drink beer or spirits. Wine drinkers tend to exercise more, eat a healthier diet, visit their doctor more often, maintain normal weight and avoid junk food.

            Now that’s a real recipe for a long, healthy life.