Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells provide oxygen to body tissues.
Vitamin B12 deficiency anemia is a low red blood cell count due to a lack of vitamin B12.
Your body needs vitamin B12 to make red blood cells. In order to provide vitamin B12 to your cells:
A lack of vitamin B12 in the diet may be due to:
A number of problems can make it difficult for your body to absorb enough vitamin B12:
Antony AC. Megaloblastic anemias. In: Hoffman R, Benz Ej, Shattil SS, et al., eds. Basic Principles and Practice. 5th ed. Philadelphia, Pa: Elsevier Churchill Livingstone;2008:chap 39.
Kaferle J, Strzoda CE. Evaluation of macrocytosis. Am Fam Physician. 2009;79:203-208.
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