Which of the following is the most common cause of hypothyroidism in iodine-sufficient regions?
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Correct answer: Hashimoto thyroiditis
Hashimoto thyroiditis is an autoimmune disorder characterized by the gradual destruction of the thyroid gland by T-cell mediated immunity and autoantibodies. It is the leading cause of goitrous hypothyroidism in areas where iodine intake is adequate.
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