Question

Which causes pellagra?

• A. Vitamin B1
• B. Vitamin B2
• C. Vitamin $B_{3}$
• D. Vitamin B6

Hint:

$B_{3}$ (Niacin) deficiency = Pellagra.

Answer 1

The Correct Option is C

Step 1: Concept
Deficiencies of specific water-soluble vitamins lead to distinct clinical syndromes.

Step 2: Meaning
Pellagra is characterized by the "4 Ds": Dermatitis, Diarrhea, Dementia, and Death.

Step 3: Analysis
Pellagra is caused by a deficiency of Niacin (Vitamin $B_{3}$) or its precursor, the amino acid tryptophan.

Step 4: Conclusion
Lack of Vitamin $B_{3}$ is the direct cause of pellagra.

Final Answer: (C)