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Whilst timing of supplementation is less critical than consistency, factors such as formulation type, food intake, and underlying gastrointestinal health significantly influence absorption efficiency
Neurologic, cognitive, hematologic, or mucosal features can point to a shortfall, as can risk factors such as malabsorption, autoimmune gastritis, relevant medications, or nitrous oxide exposure
B12 is also necessary for proper red blood cell (RBC) formation, neurological and brain function and protein and fat metabolism
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