A condition produced by dietary or metabolic deficiency. The term includes all diseases caused by an insufficient supply of essential nutrients, i.e., protein (or amino acids), vitamins, and minerals. It also includes an inadequacy of calories. (From Dorland, 27th ed; Stedman, 25th ed). The disease is nutritional deficiency disease (Monarch Disease Ontology id MONDO_0006873). Also known as: malnourished, malnutrition.