This is to be the first attempt to touch nutritional problems in the Food and Agriculture program at IIASA. It is needed to extend this problem fully and not to reduce it to the question of undernourishment or of hunger only. Nutrition is not only a very broad problem containing the biologic and economic aspects but also the psychological aspects as well. Its consequences are of a tremendous importance. To deal with nutritional problems in this way is, in my opinion, a task of eco-nutritionists.