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Vitamin B12 (cobalamin) is an essential water-soluble vitamin critical for DNA synthesis, red blood cell formation, and neurological function
However, your body cannot use that vitamin B12, and you will likely still have a functional deficiency, which results in the same dangers as an actual deficiency
Sato Y, Yamaguchi Y, Kawamoto T, et al
they're temporarily starved of the resources they need
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