Chocolate may have some health benefits, but beware of the fat and sugar in commercial products, which can contribute to high blood pressure, heart disease, and diabetes. Plain cocoa in moderation is the best choice for adding chocolate flavor to food. It is low in sugar and fat but offers potential health benefits. Cocoa appears to reduce risk factors for heart disease. Flavanols in cocoa beans have antioxidant effects that reduce cell damage. Flavanols — more prevalent in dark chocolate than in milk chocolate — may also help lower blood pressure and improve vascular function. In addition, some research has linked chocolate consumption to reduced risks of diabetes, stroke and heart attack. But more research is needed to confirm these results.