Renal rickets is related to old age

Options

A. Vitamin D deficiency
B. Osteoporosis
C. Chronic kidney disease
D. Both B and C.

Answer

To solve the question "Renal rickets is related to old age," we need to analyze the options provided and understand the relationship between renal rickets, old age, and the mentioned conditions.

### Step-by-Step Solution:

1. **Understanding Rickets**:
- Rickets is primarily a condition that leads to the weakening of bones, commonly due to a deficiency of vitamin D, calcium, or phosphate. It is most often seen in children.

2. **Renal Rickets**:
- In adults, particularly the elderly, rickets can manifest due to renal insufficiency. This is often referred to as renal rickets, where the kidneys fail to maintain proper levels of calcium and phosphate in the body.

3. **Old Age and Bone Health**:
- As people age, they are more susceptible to conditions like osteoporosis, which is the weakening of bones due to loss of bone density. Osteoporosis can lead to fractures and is common in the elderly.

4. **Chronic Kidney Disease (CKD)**:
- Chronic kidney disease is a condition where the kidneys gradually lose function over time. This can lead to imbalances in calcium and phosphate levels, contributing to bone health issues, including renal rickets.

5. **Analyzing the Options**:
- **Option A: Vitamin D deficiency**: While vitamin D deficiency is related to rickets, it is more relevant in children than in the elderly.
- **Option B: Osteoporosis**: This is a condition that affects bone density and is common in old age, but it is not directly related to renal rickets.
- **Option C: Chronic Kidney Disease**: This is directly related to renal rickets in the elderly as it affects kidney function and mineral balance.
- **Option D: Both B and C**: This option suggests that both osteoporosis and chronic kidney disease are related to renal rickets in old age.

6. **Conclusion**:
- Since renal rickets in the elderly can be attributed to both osteoporosis and chronic kidney disease, the most accurate answer is **Option D: Both B and C**.

### Final Answer:
**Option D: Both B and C**