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Foods containing vitamin B 12 include meat, shellfish, liver, fish, poultry, eggs, and dairy products. [2] . Many breakfast cereals are fortified with the vitamin. [2] . Supplements and medications are available to treat and prevent vitamin B 12 deficiency. [2] .
Cyanocobalamin is a form of vitamin B. 12 used to treat and prevent vitamin B. 12 deficiency except in the presence of cyanide toxicity. [7] [8] [2] The deficiency may occur in pernicious anemia, following surgical removal of the stomach, with fish tapeworm, or due to bowel cancer.
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How long does vitamin B12 stay in the liver?
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Vitamin B12. Media in category "B vitamins" The following 20 files are in this category, out of 20 total. Averages (%) of foods containing appropriate folate levels (to achieve adequate folate intake) based on the proposed method in food groups.jpg 3,508 × 2,481; 1.63 MB.
B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism and synthesis of red blood cells. [1] [2] They are a chemically diverse class of compounds. Dietary supplements containing all eight are referred to as a vitamin B complex.
Pernicious anemia is the most common cause of clinically evident vitamin B 12 deficiency worldwide. [14] Pernicious anemia due to autoimmune problems occurs in about one per 1000 people in the US. Among those over the age of 60, about 2% have the condition. [8]
It primarily serves to protect cobalamin (Vitamin B12) from acid degradation in the stomach by producing a HC-Vitamin B 12 complex. Once the complex has traveled to the more pH-neutral duodenum, pancreatic proteases degrade haptocorrin, releasing free cobalamin, which now binds to intrinsic factor for absorption by ileal enterocytes.
Serum vitamin B12 is a medical laboratory test that measure vitamin B 12 only in the blood binding to both transcobalamins. [1] . Most of the time, 80–94% of vitamin B 12 in the blood binds to haptocorrin, while only 6–20% is binds to transcobalamin ll. [2] Only transcobalamin ll is "active" and can be used by the body. [1] .
