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People with dietary restrictions, such as vegans and vegetarians, who may not get sufficient B12 from their diet, or those with absorption issues, like those with pernicious anemia or gastrointestinal disorders, also often qualify
Retrieved November 9, 2021 from Urbanski, G., Hamel, J.-F., Prouveur, B., Annweiler, C., Ghali, A., Cassereau, J., et al
Cecal samples Cecal weight was measured since the weight of this portion of the intestine appears to be highly influenced by the microbiome (e.g., certain antibiotic treatments dramatically increase cecal weight 27,28,29,30,31 but not the colon 27 )
7 Researchers from the 2020 study also noted that the increase in vitamin B12 was likely unrelated to typical dietary intake or standard supplementation because food and supplements generally do not substantially affect plasma B12 concentrations
