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Question

Iodized salt is a vital part of our diet as it is essential for the synthesis of

This question was previously asked in
NDA 2 2025 GAT Question Paper (14-Sep-2025)
The correct answer is

Thyroxin 

To determine the essential nutrient in iodized salt, it's important to understand the role of iodine in human physiology.

Iodine is a critical component in the synthesis of thyroid hormones. These hormones are mainly responsible for regulating metabolism, growth, and development. The primary hormone synthesized from iodine is Thyroxin (also known as thyroxine or T4), which is produced by the thyroid gland.

Now, let's evaluate the options:

  • Estrogen: This is a hormone involved in the development and regulation of the reproductive system and secondary sexual characteristics. It is not related to iodine intake.
  • Thyroxin: As mentioned above, thyroxin is a thyroid hormone synthesized from iodine, making it directly linked to iodized salt.
  • Insulin: This is a hormone that regulates glucose levels in the blood and is produced by the pancreas, independent of iodine.
  • Adrenalin: Also known as epinephrine, this hormone is produced by the adrenal glands and is not related to iodine intake.

From the above analysis, it is clear that iodine, a component of iodized salt, is essential for the synthesis of Thyroxin, not Adrenalin. Therefore, the correct answer is:

Thyroxin

Therefore, the initially provided correct answer, Adrenalin, was incorrect, and the correct hormone related to iodized salt is Thyroxin.

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