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A member asked:
What causes b12 deficency?
3 doctors weighed in across 2 answers
The most common: Cause is a problem with a co-factor in the stomach which leads to inadequate absorption. That is why most patients have to be treated with injections.
Answered 3/15/2013
5.3k views
Poor B12 absorption: Causes: pernicious anemia (lack protein = intrinsic factor), atrophic gastritis (thinning of stomach lining), surgical removal of part of stomach/small intestine, intestinal disease (crohn's dis., celiac dis., bacterial growth, or parasite), excessive alcohol consumption, autoimmune disorders (graves' dis. Or systemic lupus erythematosus). Long-term use of acid-reducing drugs. Vegetarian diet.
Answered 3/15/2013
5.3k views
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