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Those results are not available on DukeHealth.org

Vitamin B12 (Methylcobalamin) is better absorbed than Cyanocobalamin and does not contain minute amounts of cyanide

Of those, 93,615 (64 per cent) either had tests confirm they already had normal B12 levels, or they weren't tested at all

By blocking this enzyme, researchers can observe a significant shift in cellular methyl-donor availability

Vitamin B12 influences how the body converts food into energy at the cellular level