Unlike most vitamins, B12 has a uniquely complex absorption pathway: Stomach acid and pepsin release B12 from food proteins B12 binds to R-proteins (haptocorrins) in saliva and stomach Pancreatic enzymes release B12 from R-proteins in the small intestine B12 binds to intrinsic factor (produced by gastric parietal cells) The B12-intrinsic factor complex is absorbed in the terminal ileum A breakdown at any of these five steps causes deficiency which is why B12 deficiency is far more common than dietary intake alone would predict
Sufficient intakes of vitamin B12 help you stay energized, and are also necessary for your baby accumulate sufficient amounts of this vitamin during pregnancy (1, 2)
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At CoLaz, B12 injections are delivered by trained clinicians after a written consultation that screens medical history, medications, current symptoms and (where the picture warrants it) an NHS blood test through your GP
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