Question:
Pernicious anemia is caused due to deficiency of which vitamin?
Pernicious anemia is caused due to deficiency of which vitamin?
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Vitamin \(B_{12}\) deficiency leads to pernicious anemia, while vitamin \(B_1\) deficiency causes beriberi and vitamin \(C\) deficiency causes scurvy.
Updated On: Jun 22, 2026
- \(B_{12}\)
- \(B_1\)
- \(B_6\)
- \(B_2\)
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The Correct Option is A
Solution and Explanation
Step 1: Understand pernicious anemia.
Pernicious anemia is a type of anemia caused due to deficiency of vitamin \(B_{12}\).
Vitamin \(B_{12}\) is essential for the formation of red blood cells and proper functioning of the nervous system.
Step 2: Role of vitamin \(B_{12}\).
Vitamin \(B_{12}\) helps in DNA synthesis and maturation of red blood cells in bone marrow.
Deficiency leads to formation of abnormally large and immature red blood cells, causing megaloblastic anemia or pernicious anemia.
Step 3: Analyze other options.
Vitamin \(B_1\): Deficiency causes beriberi.
Vitamin \(B_6\): Deficiency may cause skin disorders and nervous problems.
Vitamin \(B_2\): Deficiency causes cheilosis and skin lesions.
Step 4: Final conclusion.
Hence, pernicious anemia is caused due to deficiency of \[ \boxed{Vitamin\;B_{12}} \]
Pernicious anemia is a type of anemia caused due to deficiency of vitamin \(B_{12}\).
Vitamin \(B_{12}\) is essential for the formation of red blood cells and proper functioning of the nervous system.
Step 2: Role of vitamin \(B_{12}\).
Vitamin \(B_{12}\) helps in DNA synthesis and maturation of red blood cells in bone marrow.
Deficiency leads to formation of abnormally large and immature red blood cells, causing megaloblastic anemia or pernicious anemia.
Step 3: Analyze other options.
Vitamin \(B_1\): Deficiency causes beriberi.
Vitamin \(B_6\): Deficiency may cause skin disorders and nervous problems.
Vitamin \(B_2\): Deficiency causes cheilosis and skin lesions.
Step 4: Final conclusion.
Hence, pernicious anemia is caused due to deficiency of \[ \boxed{Vitamin\;B_{12}} \]
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