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.
Vitamin B-12 and Iron. One of the primary causes of iron deficiency is blood loss. Anything that causes blood loss, from heavy periods to peptic ulcers, can eventually cause an iron deficiency.Given the body requires vitamin B-12 to produce red blood cells, a deficiency in vitamin B-12 can directly lead to a deficiency in iron.In this way, the onset of anemia could be the result of a B-12 deficiency rather than an iron deficiency, although the relationship is indirect.itamin B-12 and Iron. One of the primary causes of iron deficiency is blood loss. Anything that causes blood loss, from heavy periods to peptic ulcers, can eventually cause an iron deficiency.