Niacin deficiency produces

Options

A. Scurvy
B. Marasmus
C. Pellagra
D. Osteomalacia

Answer

### Step-by-Step Solution:

1. **Identify the Nutrient**: The question asks about the deficiency of niacin, which is also known as vitamin B3.

2. **Understand the Role of Niacin**: Niacin is an essential nutrient that plays a crucial role in energy metabolism and the functioning of the nervous system.

3. **Recognize the Deficiency Disease**: A deficiency in niacin leads to a specific disease known as pellagra.

4. **Characterize Pellagra**: Pellagra is characterized by the "three D's":
- **Dermatitis**: This refers to skin inflammation and hyperpigmentation.
- **Diarrhea**: This involves persistent and abnormal bowel movements.
- **Dementia**: This is characterized by memory loss and cognitive decline.

5. **Eliminate Incorrect Options**:
- **Scurvy**: This is caused by a deficiency of vitamin C (ascorbic acid).
- **Merasmus**: This is a form of severe malnutrition caused by a deficiency of calories and protein, not specifically niacin.
- **Osteomalacia**: This condition is due to a deficiency of vitamin D, affecting bone health.

6. **Conclusion**: Based on the information, the correct answer to the question "Niacin deficiency produces" is **pellagra**.

### Final Answer:
Niacin deficiency produces **pellagra**.

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