Which of the following diseases is caused by deficiency of Vitamin A?

Correct option is C

The correct answer is (c) Night Blindness

Explanation: (Information about the correct answer):

• Vitamin A, also known as Retinol, is a fat-soluble vitamin essential for maintaining healthy vision, especially in low-light conditions.

• It plays a critical role in the production of rhodopsin, a pigment in the retina that helps the eyes see in the dark.

• The deficiency of Vitamin A leads to Night Blindness (Nyctalopia), where an individual struggles to see in dim light.

• Prolonged deficiency can cause Xerophthalmia, a condition where the eyes become very dry, potentially leading to corneal damage and permanent blindness.

• It is also vital for immune function and skin health, commonly found in foods like carrots, spinach, and fish liver oil.

Information Booster: (additional info around the correct answer):

• Vitamin A deficiency is the leading cause of preventable childhood blindness worldwide, according to the WHO.

• Golden Rice is a genetically modified variety of rice produced to biosynthesize beta-carotene, a precursor of Vitamin A, to help combat deficiency in developing countries.

Additional Knowledge: (Information about incorrect options):Rickets (Option a)

• Caused by a deficiency of Vitamin D, calcium, or phosphate.

• Leads to the softening and weakening of bones in children.

• Often results in bowed legs or a curved spine.

Scurvy (Option b)

• Caused by a deficiency of Vitamin C (Ascorbic Acid).

• Symptoms include bleeding gums, weakness, and skin spots.

Pellagra (Option d)

• Caused by a deficiency of Vitamin B3 (Niacin).

• Characterized by the "3 Ds": Dermatitis, Diarrhea, and Dementia.