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J Neuropsychiatry Clin Neurosci. 2013 Spring;25(2):150-2. doi: 10.1176/appi.neuropsych.12060144.

Vitamin B₁₂ levels and psychiatric symptomatology: a case series.

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Dept. of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India.


Cobalamin (Vitamin B₁₂) has been implicated in the pathogenesis of various neuropsychiatric disorders. A review of 19 patients (14 vegetarians) with demonstrable vitamin B₁₂ deficiency showed varied psychiatric symptomatology, with the majority not having significant hematological or neurological manifestations.

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