Here are the good things research shows that cocoa can do:
Act as an antioxidant. Researchers at the University of California, Davis compared the effects of 11/3 oz of high-flavanol Dove Dark chocolate with the same amount of low-flavanol dark chocolate on 10 healthy people.
They found that only the Dove Dark had heart-healthy benefits: It reduced LDL oxidation and boosted antioxidants levels and HDL concentrations in the blood. Other studies have shown that the higher the Cocoapro "dose," the higher the levels of antioxidants in the blood and the less LDL oxidation.