Name the nutrient element which is essential for the normal working of the thyroid gland.

Iodine

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Calcium

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Magnesium

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None of the above

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Solution

The correct option is A Iodine
Thyroid gland secrets two hormones- tetraiodothyronine or thyroxine (T4) and triiodothyronine (T3).
A) Iodine is responsible for normal synthesis of these hormones.
B) Calcium levels are maintained by thyrocalcitonin but it is not essential for normal working of thyroid gland.
C) Magnesium is not essential for normal working of thyroid gland.
So, the answer is 'Iodine'.

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