Prior to the introduction of iodized table salt, it was more common to see people with goiters.If using iodized salt causes a person's goiter to disappear, what can you say about that person's condition? A) Prior to receiving iodized salt, this person's TSH levels were high. B) Upon the disappearance of the goiter, this person's TSH levels were high. C) Prior to receiving iodized salt, this person's T₄ levels were high. D) Upon disappearance of the goiter, this person's T₃ levels were low. E) Prior to receiving iodized salt, this person's T₄ levels were high but T₃ levels were low.

Question

Quizplus · Accepted Answer

The presence of a goiter indicates that the person has a lack of iodine in their diet. This lack of iodine means the thyroid gland cannot produce enough thyroid hormone, leading to increased secretion of TSH from the pituitary gland to stimulate the thyroid. Therefore, prior to receiving iodized salt, this person's TSH levels were high. The disappearance of the goiter after the introduction of iodized salt indicates that the person's iodine deficiency was treated, resulting in a normalization of thyroid hormone production and a decrease in TSH levels.

Prior to the Introduction of Iodized Table Salt, It Was