Give an example : An iodine deficiency disease

Explanation

### Step-by-Step Solution:

1. **Identify the Disease**: The question asks for an example of an iodine deficiency disease. The most common example is **goiter**.

2. **Define Goiter**: Goiter is defined as an **abnormal enlargement of the thyroid gland**. This enlargement occurs due to insufficient iodine in the diet.

3. **Explain the Role of Iodine**: Iodine is essential for the production of thyroid hormones, specifically **triiodothyronine (T3)** and **thyroxine (T4)**. These hormones are crucial for regulating metabolism in the body.

...