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Vitamin B 12 deficiency is defined by low levels of stored B 12 in the body that can result in anemia, a lower-than-normal number of red blood cells
These at-risk groups include: People with signs and symptoms of B-12 deficiency Anyone who is displaying any of the signs and symptoms of a B-12 deficiency or pernicious anemia should consult their doctor immediately
Prudchenko et al
When to Seek Medical Advice About B12 and Sleep Issues Whilst vitamin B12 supplementation rarely causes sleep disturbances, certain situations warrant medical evaluation
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