Research has shown that dark chocolate does have some health benefits due to the antioxidant effects of cocoa. That however does not mean that all dark chocolate is healthy, i.e. sugar is added to improve its taste which can lessen the effects of cocoa. It must also be consumed in moderation, eating a whole block in one sitting will certainly negate the positive effects it may have on you. So read the nutritional and ingredient information carefully before you purchase just any ‘dark chocolate’.