When to get tested for B12 deficiency (what are the early signs and symptoms of B12 Deficiency) ?
In case of Vitamin B12 deficiency, early signs may include loss of appetite, diarrhea, numbness and tingling of hands and feet, paleness, tiredness and decreased concentration and memory. So, if you have a vitamin B12 concentration in the low end of the normal range or if you have any of the aforementioned symptoms, you should get yourself tested.
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Vitamin B12 Back To Vitamin FAQ