Weakness of muscles & bones in elderly occurs due to deficiency of–

Options

A. Vitamin D
B. Vitamin C
C. Vitamin B complex
D. Vitamin A

Answer

To solve the question regarding the weakness of muscles and bones in the elderly due to deficiency, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Symptoms**: The question mentions weakness of muscles and bones in elderly individuals. This suggests a condition that affects the musculoskeletal system.

**Hint**: Consider what nutrients are essential for muscle and bone health.

2. **Review Nutritional Deficiencies**: The options provided are vitamin D, vitamin C, vitamin B complex, and vitamin A. We need to analyze how each vitamin affects muscle and bone health.

**Hint**: Think about the roles of each vitamin in the body, particularly in relation to bones and muscles.

3. **Vitamin D's Role**: Vitamin D is crucial for the absorption of calcium, magnesium, and phosphate in the intestines. These minerals are vital for maintaining bone density and strength.

**Hint**: Recall the relationship between vitamin D and calcium in bone health.

4. **Consequences of Vitamin D Deficiency**: A deficiency in vitamin D can lead to conditions such as osteoporosis (loss of bone density) and osteomalacia (softening of the bones), which can result in muscle weakness and increased risk of fractures.

**Hint**: Consider the specific diseases associated with vitamin D deficiency.

5. **Evaluate Other Vitamins**:
- **Vitamin C**: Deficiency leads to scurvy, which primarily affects connective tissues and does not directly cause muscle and bone weakness.
- **Vitamin B Complex**: Deficiency can lead to various types of anemia but does not specifically cause muscle and bone weakness.
- **Vitamin A**: Its deficiency affects immunity and skin health but is not directly linked to muscle and bone weakness.

**Hint**: Compare the effects of the other vitamins with those of vitamin D.

6. **Conclusion**: Based on the analysis, the correct answer is that the weakness of muscles and bones in the elderly occurs due to a deficiency of **vitamin D**.

### Final Answer:
The weakness of muscles and bones in elderly occurs due to deficiency of **vitamin D**.

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