Chapter EH, Problem 50R

Solution

Interpretation : The risks for iodine deficiency in countries E, A, and U are to be compared.

Concept Introduction : Iodine is a solid that is dark blue. At normal temperatures, iodine easily sublimates from a solid state.

On comparing the risks for iodine deficiency in different countries, the country U has the higher iodine deficiency, country E has optimal deficiency and country A has a mild deficiency.

The only organ in the body that can absorb iodine is the thyroid gland.

Iodine is used by thyroid cells to make thyroid hormones, which control metabolism.

Goiters, which are enlargements of the thyroid gland, and thyroid hormone deficiencies can result from diets low in iodine.

In extreme circumstances, insufficient thyroid hormone levels can lead to birth abnormalities and mental impairment.

Iodine supplementation in any amount helps stop iodine shortage diseases.

In the country U, the risk for iodine deficiency is hyperthyroidism that is about $\left(\text{200}-\text{299}\text{μg/L}\right)$ .

In country A, the risk of iodine deficiency is mixed in different countries. But the level is moderate and mild whose range is $\left(20-\text{99}\text{μg/L}\right)$ .

In country E, the risk of iodine efficiency is optimal, and the range is $\left(\text{100}-1\text{99}\text{μg/L}\right)$ .

The risk for iodine deficiency is higher in the country U.