A member asked:

What does it mean when someone say theat they have a lack in b12 vitamins?

A doctor has provided 1 answer
Dr. Roy Arnold answered

Specializes in Internal Medicine

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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