Endemic goitre is a state of

Options

A. increased thyroid function
B. normal thyroid function
C. decreased thyroid function
D. moderate thyroid function

Answer

**Step-by-Step Solution:**

1. **Understanding Endemic Goiter**: Endemic goiter is a condition that arises due to the deficiency of iodine in the diet. It is primarily characterized by the enlargement of the thyroid gland.

2. **Function of the Thyroid Gland**: The thyroid gland is responsible for producing hormones such as T3 (triiodothyronine) and T4 (thyroxine), which are crucial for regulating metabolism. The production of these hormones requires iodine.

3. **Impact of Iodine Deficiency**: When there is insufficient iodine, the thyroid gland cannot produce adequate amounts of T3 and T4. This leads to a state of decreased thyroid hormone levels in the body.

4. **Compensatory Mechanism**: To compensate for the low levels of thyroid hormones, the thyroid gland enlarges in an attempt to produce more hormones. This enlargement is what is referred to as goiter.

5. **Conclusion**: Therefore, endemic goiter is a state of decreased thyroid function due to iodine deficiency, leading to the enlargement of the thyroid gland as it tries to compensate for the lack of hormone production.

**Final Answer**: Endemic goiter is a state of decreased thyroid function.

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