B12 deficiency: occurs when intake of B 12 is inadequate, such as a strict vegan diet, or when absorption is impaired. Impaired absorption can occur if the intestine is diseased such as in Crohn's disease or a key cofactor is absent as in Pernicious anemia. Thanks for trusting HealthTap!
Answered 1/7/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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