Additionally, Crohns disease, Celiac disease, and gastric bypass surgery might also affect the absorption rate, thus contributing to the B12 deficiency
B12 is a water-soluble nutrient that is essential for energy production, red blood cell creation, neurological function, heart health, and DNA synthesis
Article Cited Franques Jrme, Chiche Laurent, Mathis Stphane
Epidemiology: High levels of vitamin B12 were found in: Causes: Excessive supplementation (a direct increase in plasma vitamin B12 by excess intake or administration) Increased release of vitamin B12 from tissue stores (liberation from an internal reservoir): Solid tumors (especially hepatic or hematologic malignancies) Liver metastases Increased binding proteins: 7 Excess production: Liver disease (e.g., hepatitis, cirrhosis, hepatocellular carcinoma) damaged hepatocytes release haptocorrin (transcobalamin I) and B12 into circulation Myeloproliferative disorders these increase granulocyte production, which leads to more haptocorrin (transcobalamin I/III), a B12-binding protein produced by proliferating myeloid cells