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Vitamin B12 absorption from food requires several steps: intrinsic factor secretion from gastric parietal cells, acid-dependent release of B12 from food proteins, and physical contact time in the ileum where transcobalamin receptors capture the B12-intrinsic factor complex
Many patients come in just for B12 without any other treatment
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Only about half of the vitamin B12 ingested from food sources is absorbed into the body
Think of it as a magnet-like operation, but with two electrodes instead or magnets
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