Studies suggest that red wine may be more heart-healthy than other alcoholic drinks, like white wine or beer, because it contains an antioxidant called resveratrol. Researchers think resveratrol may help prevent damage to blood vessels, lower "bad" cholesterol and inhibit blood clots. But the Mayo Clinic cautions that more research is needed on people, not just mice, to establish that red wine is more beneficial to your heart than white.
However, there is also evidence that the flesh of the grapes as well as the skins has properties that protect your ticker. Vintners press the skins to make red wine, but they remove them to make most white wines. As a result, red wines contain more resveratrol, but white wines contain other types of antioxidants that are beneficial to heart health.