Question

The condition which results in decrease of red blood cells, as the body cannot properly absorb vitamin $B_{12}$ from the gastrointestinal tract is called

• A. Anaemia
• B. Pernicious anaemia
• C. Beriberi
• D. Pellagra

Answer 1

The correct option is B Pernicious anaemia

Anemia is a condition in which one does not have enough healthy red blood cells.
Pernicious anemia is a type of vitamin B${}_{12}$ anemia. The body cannot absorb vitamin B${}_{12}$ from the gastrointestinal tract which is required to synthesize RBCs, thereby resulting in pernicious anemia.
Beriberi refers to thiamine or vitamin B${}_1$ deficiency which caused emotional disturbances, impaired sensory perception, weakness and pain in the limbs.
Pellagra is the deficiency disease caused by a lack of nicotinic acid or its precursor tryptophan in the diet which causes aggression, dermatitis, diarrhea, insomnia etc.
Therefore, the correct answer is option B.