Pellagra is caused due to the deficiency of

Options

A. Ascordic acid /Vit C
B. Nicotinic acid /Vit `B_5`
C. Pantothenic acid
D. Folic acid

Answer

**Step-by-Step Solution:**

1. **Understanding Pellagra**: Pellagra is a disease that arises due to a deficiency in certain nutrients. It is important to identify which nutrient is lacking in this condition.

2. **Identifying the Nutrient**: The options provided are:
- Option 1: Ascorbic acid (Vitamin C)
- Option 2: Nicotinic acid (Niacin)
- Option 3: Pantothenic acid (Vitamin B5)
- Option 4: Folic acid

3. **Analyzing Each Option**:
- **Ascorbic acid (Vitamin C)**: Deficiency in Vitamin C leads to scurvy, characterized by symptoms like bleeding gums and dental problems. Therefore, this option is incorrect.
- **Nicotinic acid (Niacin)**: A deficiency in niacin leads to pellagra, which is characterized by the "3 D's": Dermatitis, Diarrhea, and Dementia. This is the correct option.
- **Pantothenic acid (Vitamin B5)**: Deficiency is rare and can lead to symptoms like fatigue and irritability, but it does not cause pellagra. Thus, this option is incorrect.
- **Folic acid**: Low levels can lead to megaloblastic anemia, but it is not related to pellagra. Therefore, this option is also incorrect.

4. **Conclusion**: Based on the analysis, pellagra is caused due to the deficiency of nicotinic acid (niacin).

5. **Final Answer**: The correct answer is Option 2: Nicotinic acid.

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