Pernicious anemia results from a combination of lack of intrinsic factor and which of the following situations?

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Pernicious anemia results from a lack of intrinsic factor, which is required for absorption of vitamin B12 in the small intestine. However, B12 also requires hydrochloric acid for its release from ingested protein sources. Therefore, lack of hydrochloric acid can exacerbate the deficiency of B12, leading to pernicious anemia. Pharmacologic intakes of cobalamin and folate would not be a contributing factor to pernicious anemia. Lack of pancreatic vitaminases may lead to deficiencies in other vitamins, but not B12.

Pernicious Anemia Results from a Combination of Lack of Intrinsic