If something delicious and perhaps sinful turns out to be beneficial for your health, we will have no one complaining about it. Something similar happened when a study by Columbia University found that flavanols which is a component in Cocoa and the latter a principal ingredient in chocolate, can reverse one aspect of memory loss related to aging.
It was a small but interesting study which involved 37 healthy subjects between the ages of 50 to 69. One half of the groups were given a drink laced with 900 mg of Cocoa daily for three months. The rest were given 10 mg daily for three months.