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In the duodenum, pancreatic enzymes degrade the R-protein-B12 complexes, freeing B12 to bind with intrinsic factor (IF) , a glycoprotein produced by gastric parietal cells in the stomach lining
But Theres This Theory There are some folks who feel that its smart to increase B12 intake surrounding exercise because while lifting weights increases protein synthesis, it also increases protein breakdown
However, higher hormone levels do not automatically translate into dramatic muscle growth in healthy adults
two exceptions to this are in , where in the year 2000 oral vitamin B Canada and Sweden 12 accounted for 73% of the total vitamin B 12 prescribed
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