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This deficiency can lead to fatigue, mood disturbances, and cognitive impairments
Acne, post-acne, enlarged pores
High homocysteine levels can lead to fatigue and weakness
The traditional way of diagnosing has been with a serum B12 blood test, however many sufferers of a B12 deficiency may not have anaemia, or have a serum B12 blood level within an abnormally low range in accordance to the normal ranges set
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