Vitamin B12 Deficiency
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Vitamin B12 actually refers to a group of compounds called “cobalamins” that come from protein foods (meats, dairy products, eggs). They are used by the body to help generate energy, build red blood cells, maintain our nervous system, and repair cells. In order for the body to absorb the B12 present in the diet, we must have enough of a substance called “intrinsic factor” that is produced in the stomach and aids in the absorption of B12. The disease pernicious anemia is caused by a lack of intrinsic factor.
Evidence Based Practice 11(5).