glutathione skin lightening serum Whitening helps brighten dull skin, reduce dark spots, and promote a more even, radiant complexion Glutathione Best Skin Brightening, Anti

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doi: 10.18632/oncotarget.21303

[DOI] [PubMed] [Google Scholar] 57.Vaisse C, Clement K, Durand E, Hercberg S, Guy-Grand B, Froguel P

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