Vitamin A deficiency causes all of the following EXCEPT:-
Correct Answer: Loss of weight, irritability, loss of hair and joint pains
Description: Night blindness (nyctalopia) is one of the earliest symptoms of vitamin A deficiency.
Vitamin A deficiency results in growth retardation due to impairment in skeletal formation.
The reproductive system is adversely affected in vitamin A deficiency. Degeneration of germinal epithelium leads to sterility in males.
Excessive consumption of vitamin A leads to toxicity.
The symptoms of hypervitaminosis A include dermatitis (drying and redness of skin), enlargement of liver, skeletal decalcification, tenderness of long bones, loss of weight, irritability, loss of hair, joint pains etc.
Key Concept:
Vitamin A deficiency causes growth retardation due to impairment in skeletal formation,degeneration of germinal epithelium leading to sterility in male and nyctalopia
Reference: Satyanarayana- Biochemistry, 3rd edition, pg-123
Category:
Biochemistry
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