Iron deficiency anemia may be a common type of anemia — a condition during which blood lacks adequate healthy red blood cells.
Red blood cells hold oxygen to the body's tissues.
As the name implies, iron deficiency anemia is because of short iron.Without enough iron, your body cannot turn out enough of a substance in red blood cells that permits them to hold gas (hemoglobin). As a result, iron deficiency anemia might leave you tired and in need of breath.