Factor: Antipernicious Anemia

In 1930, researcher William Castle conducted clever experiments feeding patients predigested meat and gastric juices. He deduced that a normal stomach secretes an that must bind with an "Extrinsic Factor" (the antipernicious anemia factor in food) to allow the body to absorb it. Patients with pernicious anemia, he discovered, lacked this intrinsic factor due to stomach atrophy. 3. Isolation of Vitamin B12 (1948) Pernicious anemia: MedlinePlus Medical Encyclopedia

The journey to a cure began with George Whipple , who was studying blood regeneration in anemic dogs. Due to a happy laboratory accident where a technician fed the dogs raw liver instead of cooked food, Whipple realized that . antipernicious anemia factor

Eating massive amounts of raw or lightly cooked liver was nauseating and difficult for patients to sustain. Scientists knew there was a specific compound in the liver curing the disease—the "antipernicious anemia factor"—but they didn't know what it was. Eating massive amounts of raw or lightly cooked

Hearing of this, Boston physicians George Minot and William Murphy decided to try feeding raw liver to human patients dying of pernicious anemia. To everyone's astonishment, patients forced to consume about a half-pound of raw liver daily made complete recoveries. Whipple, Minot, and Murphy shared the for this discovery. 2. Extrinsic vs. Intrinsic Factors Before its chemical structure was mapped

The story of the antipernicious anemia factor stands as one of the most fascinating detective stories in the history of medicine, involving a bridge between dietetics, hematology, and organometallic chemistry. 🩸 The Killer Disease: Pernicious Anemia

The is the historical scientific term for Vitamin B12 (cobalamin) . Before its chemical structure was mapped, this mysterious substance was recognized only by its life-saving ability to cure pernicious anemia—a condition that was once an absolute death sentence.