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how often do you need to have b12 injections Vitamin Injection Dosage When Should You Get a
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Figure 2

33 van Dyck, C

Older adults are at risk of magnesium deficiency due to reduced intestinal absorption and increased urinary excretion
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None of the studies included a decrease in MMA or tHcy upon B 12 administration as a potential marker in the evaluation of potential B 12 deficiency

One study reported that vitamin B12 deficiency was associated with twice the risk of severe depression (4)
