Cornell University’s Dr. Graham Jeffries began by studying the inflammation of the stomach lining that precedes pernicious anemia. This robs the patient of a biochemical messenger which normally ...

gastritis is inflammation of the stomach lining. Because hydrochloric acid is necessary for the absorption of vitamin B12, it ...

Pernicious anemia, a specific kind of anemia that occurs when the body cannot absorb enough B12. People with this condition lack a type of protein made in the stomach called intrinsic factor ...