Long ago, one cure for anemia was to feed a patient beef jerky soaked in the gastric juices of a pig. In cases in which this cure worked, the type of anemia was most likely

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Pernicious anemia is caused by a deficiency in vitamin B12, which is essential for the production of healthy red blood cells. In the past, it was thought that the gastric juices of a pig could help to cure this type of anemia by providing a source of intrinsic factor, a protein produced in the stomach that helps the body absorb vitamin B12. However, this cure is no longer used as it is not a reliable or safe treatment.

Long Ago, One Cure for Anemia Was to Feed a Patient