Inter Press Service: Nutrition is complex and multi-dimensional. Micronutrient deficiencies or "hidden hunger' are much more widespread than chronic undernourishment or hunger, understood as inadequate dietary energy. Micronutrient deficiencies refer to the lack of essential vitamins, minerals and other substances required over the human life cycle by the body in small amounts. Micronutrient undernutrition has long-term effects on health, learning ability and productivity, leading to high social and public costs, reduced...