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it also recommends that people over 50 receive half the RDA from fortified foods or supplements because that form of B12 is not bound to protein and is easier to absorb (IOM, 1998)
Ford ES, Li C, Sattar N
According to the available scientific data, research experiments in rodents have lasted up to 45 days, with most studies ranging between 11-45 days or four weeks on average [3, 4, 7]
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