Eating dark chocolate may have health benefits such as raising antioxidant levels in the bloodstream and lowering levels of bad cholesterol, according to European researchers. Researchers at the Rome Institute for Food and Nutrition Research measured the antioxidant levels of 12 volunteers one hour after they had eaten chocolate. Eating one hundred grams of plain chocolate boosted volunteers' antioxidant levels by almost 20%, while eating milk chocolate or drinking milk while eating plain chocolate did not have the same effect, reported Agence France-Presse.