Pernicious anemia is a malabsorption of vitamin B₁₂ from what component deficiency?
A)Gastric juice
B)Intrinsic factor
C)Histamine
D)Folate

Question

Quizplus · Accepted Answer

Pernicious anemia is caused by a deficiency in intrinsic factor, a protein produced by the stomach that is necessary for the absorption of vitamin B₁₂. Without intrinsic factor, vitamin B₁₂ cannot be absorbed in the small intestine and leads to pernicious anemia.

Pernicious Anemia Is a Malabsorption of Vitamin B₁₂ from What