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Vitamin B12 Deficiency Gaba Online Psychiatrist Can Vitamin B12 Deficiency Indicate Cancer? Know Warning Signs Constipation in B12 deficiency is primarily neurogenic, due to autonomic and enteric neuropathy causing slow gut motility Constipation may precede anemia Often improves after B12 replacement Think of B12 Vitamin B12 shots: Uses, benefits, and side effects Vitamin B12 Injection Side Effects and Safety
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