Of course, the digestive system of the kid should also be considered in this diet. Genetic, social and cultural factors and stress are significant factors as well as foods are critical in growth and development of kids. In this chapter, we shall discuss any matters related to foods. Monitoring of growth of kids is evaluated according to community, where they take place. Growth and development disorders in kids occur due to diet deficits, deterioration of environmental conditions, irregular diet habits and any problems in the digestive system. In cases we call as an unconscious diet, for example, feeding kids with sugar starch may meet their energy requirements. But they are devoid of vitamin, mineral and proteins. This causes any diet deficits and nutrition disorders in kids. Diet disorder observed due to protein and energy taking deficit in kids and any resultant clinical condition (haemolysis occurred without edema) is called as marasmus. In kids, who take satisfactory energy, but less protein (in pure carbohydrate diet such as starch), eudemons haemolysis is observed. This is called as kwashiorkor.