Long exposure to the over (high) doses of vitamin D will cause

Options

A. Decalcification of bones
B. Demineralization of bones
C. Sterility
D. Muscular dystrophy

Explanation

### Step-by-Step Solution:

1. **Understanding Vitamin D**: Vitamin D is a fat-soluble vitamin that is crucial for maintaining healthy bones and calcium levels in the body. It is synthesized in the skin upon exposure to sunlight and can also be obtained from certain foods and supplements.

2. **Effects of High Doses of Vitamin D**: Long-term exposure to high doses of vitamin D can lead to toxicity, which is known as hypervitaminosis D. This condition can cause various health issues.

3. **Bone Health**: Vitamin D plays a significant role in calcium absorption and bone health. While adequate levels of vitamin D are essential for bone mineralization, excessive amounts can lead to the opposite effect.

4. **Decalcification and Demineralization**: High doses of vitamin D can lead to increased calcium levels in the blood (hypercalcemia). This can result in the leaching of calcium from the bones, leading to conditions such as decalcification and demineralization of the bone.

5. **Other Possible Effects**: Symptoms of vitamin D toxicity may include nausea, vomiting, weakness, and loss of appetite. However, the specific options given in the question are decalcification of bone, demineralization of bone, sterility, or muscular dystrophy.

6. **Conclusion**: Among the options provided, the most relevant effects of long exposure to high doses of vitamin D are decalcification of bone and demineralization of bone. These terms are often used interchangeably in this context, indicating the loss of calcium from the bone.

### Final Answer:
Long exposure to high doses of vitamin D will cause **decalcification of bone** (or **demineralization of bone**).

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