Question:
Which one of the following diseases is caused by the deficiency of niacin:
Which one of the following diseases is caused by the deficiency of niacin:
Updated On: Jul 14, 2026
- Anemia
- Night Blindness
- Pellagra
- Scurvy
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The Correct Option is C
Approach Solution - 1
The correct option is (C): Pellagra.
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Approach Solution -2
The question asks which disease results from a deficiency of niacin. Let's check what each option is linked to.
- Anemia: Anemia is most often caused by a lack of iron, vitamin B12, or folate, which are needed to make healthy red blood cells. It is not the disease tied to niacin deficiency.
- Night Blindness: Difficulty seeing in dim light is caused by a lack of vitamin A, which is needed to make the retinal pigment rhodopsin. This is a different vitamin from niacin.
- Pellagra: Niacin, also called vitamin B3, is needed to make coenzymes such as NAD and NADP that drive energy metabolism in cells. A long-term shortage of niacin produces pellagra, marked by dermatitis, diarrhea, and dementia.
- Scurvy: Scurvy comes from a lack of vitamin C, which is needed for collagen formation, and shows up as bleeding gums and poor wound healing. This is unrelated to niacin.
Matching each disease to its vitamin shows that only pellagra is caused by a shortage of niacin.
Therefore, the correct answer is Pellagra.
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