Question

Deficiency of which of the following vitamins causes the disease 'Rickets' in children?

• A. Vitamin A
• B. Vitamin B1
• C. Vitamin C
• D. Vitamin D

Hint:

Important Vitamin Deficiencies: Vitamin A \(\rightarrow\) Night Blindness Vitamin B1 \(\rightarrow\) Beri-Beri Vitamin C \(\rightarrow\) Scurvy Vitamin D \(\rightarrow\) Rickets

Answer 1

The Correct Option is D

Concept: Vitamins are essential micronutrients required by the human body for proper growth, metabolism, immunity, and maintenance of tissues. Deficiency of different vitamins leads to specific diseases and disorders. Vitamin D plays a particularly important role in maintaining healthy bones and teeth because it helps the body absorb calcium and phosphorus efficiently.

Step 1: Understanding the role of Vitamin D. Vitamin D is a fat-soluble vitamin that:

• Promotes absorption of calcium from the intestine.

• Helps maintain normal levels of calcium and phosphorus in the blood.

• Supports proper growth and mineralization of bones.

• Strengthens the skeletal system during childhood.
Without adequate Vitamin D, bones fail to harden properly.

Step 2: How Vitamin D deficiency causes Rickets. When children suffer from Vitamin D deficiency:

• Calcium absorption decreases.

• Bone mineralization becomes defective.

• Bones become soft and weak.

• Skeletal deformities begin to appear.
This condition is called: \[ \boxed{\text{Rickets}} \] Common symptoms include:

• Bowed legs

• Knock knees

• Delayed growth

• Bone pain

• Weak muscles

• Deformed chest structure
Therefore, Vitamin D deficiency directly causes Rickets in children.

Step 3: Analyzing Vitamin A. Vitamin A is important for:

• Vision

• Eye health

• Immunity

• Skin maintenance
Its deficiency causes: \[ \boxed{\text{Night Blindness}} \] Hence, Option (A) is incorrect.

Step 4: Analyzing Vitamin B1. Vitamin B1 (Thiamine) is important for:

• Energy metabolism

• Nervous system function

• Muscle activity
Its deficiency causes: \[ \boxed{\text{Beri-Beri}} \] Hence, Option (B) is incorrect.

Step 5: Analyzing Vitamin C. Vitamin C is essential for:

• Collagen synthesis

• Wound healing

• Healthy gums

• Immune defense
Its deficiency causes: \[ \boxed{\text{Scurvy}} \] Hence, Option (C) is incorrect.

Step 6: Final conclusion. Among the given vitamins, deficiency of Vitamin D causes the disease Rickets in children. \[ \boxed{\text{Vitamin D} \rightarrow \text{Rickets}} \] Therefore, the correct answer is: \[ \boxed{\text{(D) Vitamin D}} \]