Question

Why is the use of iodized salt logical/recommended?

Hint:

Iodine deficiency during pregnancy can lead to severe physical and mental retardation in the infant, a condition known as cretinism.

Answer 1

Step 1: Understanding the Concept:
Dietary minerals are essential for the proper functioning of the endocrine system.

Step 2: Detailed Explanation:
The thyroid gland requires the trace mineral iodine to synthesize the hormone thyroxine.
Thyroxine plays a vital role in regulating the body's basal metabolic rate, physical growth, and mental development.
If there is a deficiency of iodine in the diet, the thyroid gland cannot produce enough thyroxine. To compensate, the gland enlarges, leading to a visible swelling in the neck known as an endemic goiter.
Using salt fortified with iodine is an inexpensive and highly effective public health strategy to ensure populations receive adequate daily iodine, thereby preventing goiter and associated developmental issues.

Step 3: Final Answer:
It is recommended because iodine is essential for making thyroxine, and its deficiency causes goiter.