Graves disease leads to overproduction of which hormone?

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Multiple Choice

Graves disease leads to overproduction of which hormone?

Explanation:
Graves disease causes autoimmune stimulation of the thyroid gland, leading to overproduction of thyroid hormones (T3 and T4). Autoantibodies against the TSH receptor act like TSH and continuously activate the receptor, driving the thyroid to produce more hormone regardless of pituitary signals. This excess thyroid hormone speeds up metabolism and produces symptoms such as weight loss, heat intolerance, palpitations, anxiety, and tremors. The other options don’t fit Graves: cortisol comes from the adrenal cortex, calcitonin from thyroid C cells, and thyroid-stimulating hormone is produced by the pituitary and is suppressed when thyroid hormone is high due to negative feedback.

Graves disease causes autoimmune stimulation of the thyroid gland, leading to overproduction of thyroid hormones (T3 and T4). Autoantibodies against the TSH receptor act like TSH and continuously activate the receptor, driving the thyroid to produce more hormone regardless of pituitary signals. This excess thyroid hormone speeds up metabolism and produces symptoms such as weight loss, heat intolerance, palpitations, anxiety, and tremors. The other options don’t fit Graves: cortisol comes from the adrenal cortex, calcitonin from thyroid C cells, and thyroid-stimulating hormone is produced by the pituitary and is suppressed when thyroid hormone is high due to negative feedback.

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