I think you need to dig a little deeper your research and find out what product this type of rhetoric --- er, research is actually based - it surely isn't based upon the raw cacao product.
The thing is with raw cacao - NOT CHOCOLATE - is that it's the highest rated in ORAC of any whole food ever discovered. Nothing measures higher - period. It's also extremely high in magnesium, which our body uses to create calcium.
Also, it's a matter of understanding that cacao in addition to all of it's great many individual benefits - it's dramatically more impressive when combined with other superfoods - it's a delivery system at the alchemical level with all of the herbal systems - amazonian, chinese, north american, ayurvedic. It has to do with the way it binds, dilates, and delivers alchemically. When you combine it with chemicals and Sugar - you might very well create addiction, but it's not to the raw cacao itself.
As David Wolfe said, "Cacao causes irrational behavior in people who don't consume it".