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Prolonged deficiency of nicotinic acid produces

1. Osteomalacia
2. Xerophthalmia
3. Pellagra
4. Anaemia

Correct answer: Pellagra

Solution

Nicotinic acid is niacin (vitamin B3), and prolonged deficiency classically causes pellagra. Pellagra is known for the “3 Ds”: dermatitis, diarrhea, and dementia.

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