WLS Glossary
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Term Definition
Iron is an essential constituent of hemoglobin, cytochrome, and other components of respiratory enzyme systems; its chief functions are in the transport of oxygen to tissues (in hemoglobin) and in cellular oxidation mechanisms. Dietary sources include muscle meats, eggs, grains, and certain vegetables and fruits. Depletion of iron stores may result in iron-deficiency anemia . Excessive consumption of iron causes iron poisoning (see under poisoning).