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Vecchiet J, Cipollone F, Falasca K, et al
& Potter, R
[1] Other causes include autoimmune conditions, certain infections, and inflammatory states that alter B12 metabolism or binding protein production
Retrieved 6 January 2020
Age and Genetic Factors : As people age, their bodies naturally produce less intrinsic factor, reducing the ability to absorb B12 from food and supplements
Cady, and A
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