Hunger is an epidemic that plagues millions of children worldwide. We have all seen images of children in developing countries that do not have enough to eat. They may appear very skinny, and in other cases have bloated bellies. These things are caused by the lack of calories and protein in the diet. But, there is a new form of hunger on the rise, mainly in developed countries like the United States, where food is plentiful. It is referred to as hidden hunger.