`I^131` is used for the treatment of

Options

A. Skin cancer
B. Lung cancer
C. Thyroid cancer
D. Bone tumors

Answer

To determine the treatment for Iodine-131 (I-131), we can follow these steps:

### Step 1: Understand the Role of Iodine
Iodine is an essential element that plays a crucial role in the functioning of the thyroid gland. It is necessary for the production of thyroid hormones, which regulate metabolism.

**Hint:** Recall the importance of iodine in thyroid hormone synthesis.

### Step 2: Identify Thyroid Disorders
Two primary thyroid disorders related to iodine levels are:
- **Hypothyroidism:** A condition where the thyroid gland does not produce enough hormones.
- **Hyperthyroidism:** A condition where the thyroid gland produces too much hormone.

**Hint:** Think about how iodine levels affect thyroid hormone production.

### Step 3: Recognize the Use of I-131
Iodine-131 is a radioactive isotope of iodine that is commonly used in medical treatments, particularly for thyroid-related conditions. It is effective in treating:
- **Hyperthyroidism:** By destroying overactive thyroid cells.
- **Thyroid Cancer:** By targeting and killing cancerous thyroid cells.

**Hint:** Consider the therapeutic applications of radioactive isotopes in medicine.

### Step 4: Evaluate Treatment Options
Given the context of the question, we can evaluate the options:
- **Skin Cancer:** Not treated with iodine.
- **Lung Cancer:** Not related to iodine.
- **Thyroid Cancer:** Directly related to iodine treatment.
- **Bone Tumors:** Typically treated with calcium, not iodine.

**Hint:** Focus on which options are directly linked to thyroid function.

### Step 5: Conclusion
Based on the information, the correct answer is that Iodine-131 is used for the treatment of **Thyroid Cancer**.

**Final Answer:** Iodine-131 is used for the treatment of Thyroid Cancer.

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