Deficiency of which vitamin leads to pellagra, characterized by the “3 Ds”: dermatitis, diarrhea, and dementia?
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Correct answer: Vitamin B3 (niacin)
Niacin (vitamin B3) deficiency causes pellagra with the clinical triad of dermatitis, diarrhea and dementia due to impaired NAD/NADP-dependent redox reactions.
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