Multiple choice

Insufficient dietary iodine causes

  1. cretinism

  2. gigantism

  3. enlarged thyroid

  4. reduced thyroid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Insufficient dietary iodine causes the thyroid gland to enlarge (goitre) as it tries to capture more iodine from the blood to produce thyroid hormones. Cretinism results from iodine deficiency during fetal development. Gigantism is caused by excess growth hormone. The thyroid responds to iodine deficiency by enlarging.

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