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Deficiency In healthy adults, overt vitamin B 12 deficiency is uncommon, mainly because total body stores can exceed 2,500 g, daily turnover is slow, and dietary intake of only 2.4 g/day is sufficient to maintain adequate vitamin B 12 status (see The RDA) (4)
While third-party tested and low-level risk products may be options, complete elimination of risk is impossible
Epigenetic control of embryonic stem cell differentiation
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