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Understanding how B12 functions in the body is important context before evaluating claims about its role in weight loss
and c) irregular dietary patterns), reduced bioavailability (impairment of the intrinsic factor-mediated absorption pathway, often due to the widespread and prolonged use of proton pump inhibitors), and malabsorption syndromes
It has been of particular interest in research models exploring immune response enhancement, antiviral activity, and immune regulation
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