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Many healthy adults can maintain normal B12 levels through a balanced diet that includes animal-based foods or fortified products
Of those, 93,615 (64 per cent) either had tests confirm they already had normal B12 levels, or they weren't tested at all
The information contained herein is not a substitute for and should never be relied upon for professional medical advice
For some individuals, the effects of a B12 injection may be more subtle or gradual, while for others, the effects may be more immediate and noticeable
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