What caused the Iran hostage crisis? A: The Iran hostage crisis occurred when Mohammed Reza Pahlavi, a domineering Iranian ruler who was recently expelled from his country, was granted access into the United States by President Jimmy Carter to receive cancer treatment.
There are five main categories of mineral deficiency: calcium, iron, magnesium, potassium, and zinc. Calcium is needed for strong bones and teeth. It also supports proper function of your blood vessels, muscles, nerves, and hormones.
Anemia-Iron Deficiency. Iron deficiency anemia is a blood disorder characterized by the body's production of red blood cells, in which the oxygen-carrying component (erythrocyte) is dysfunctional.It is caused by a nutritional deficiency of iron, by excessive iron loss due to gastrointestinal bleeding, or by excessive menstruation.nemia-Iron Deficiency. Iron deficiency anemia is a blood disorder characterized by the body's production of red blood cells, in which the oxygen-carrying component (erythrocyte) is dysfunctional.