Iron is an essential nutrient with many important biological functions. One of its main jobs is to carry oxygen in the hemoglobin of red blood cells. All of your body's cells use oxygen to produce energy. If your iron stores are low you may feel tired & weak and you may experience more infections. Iron deficiency is usually the result of too little iron in the diet, poor absorption of iron from the foods you eat and/or recent blood loss such as from heavy menstrual periods. Those at highest risk for iron deficiency include infants and children, menstruating and pregnant women, and vegetarians.
There are two forms of iron in food:
Iron Recommendations - Dietary Reference Intake (DRI)
Your health care provider may recommend an iron-containing dietary supplement if you cannot consume enough dietary iron and your iron stores are low.