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If your B12 is too high, check with your doctor to rule out liver disease, diabetes, leukemia, and other cancers
If you feel constantly tired and your levels of B12 are low, bringing them up to normal may give you more energy, studies show
Carrol says
Overdosing can lead to elevated B12 levels and potential side effects, while underdosing may not adequately address symptoms
Those suffering from B12 deficiency have been known to have lower than normal bone mineral density, which can lead to osteoporosis over time
Your B12 is so low'
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