Pernicious anemia occurs when the bone marrow is destroyed by drugs or radiation.

Name: Pernicious anemia occurs when the bone marrow is destroyed by drugs or radiation.
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Pernicious anemia is a type of anemia that occurs when the body is unable to absorb vitamin B12 from food due to a lack of intrinsic factor, a protein made by cells in the stomach. It is not caused by bone marrow destruction from drugs or radiation.

Pernicious Anemia Occurs When the Bone Marrow Is Destroyed by Drugs