Hyperthyroidism is a result of overproduction of

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TSH

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Both T3 and T4

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Solution

The correct option is D Both T3 and T4
Hyperthyroidism is defined as a condition of overproduction of the thyroid hormones T3 or T4 or both.
This condition is most commonly caused by the development of Grave's disease, an autoimmune disease in which anomalous antibodies stimulate the thyroid to secrete excessive quantities of thyroid hormones.
The disease can progress to the formation of a toxic goiter as a result of thyroid growth in response to a lack of negative feedback mechanisms. It presents with symptoms such as a thyroid goiter, protruding eyes, palpitations, excessive sweating, diarrhea, weight loss, muscle weakness and unusual sensitivity to heat.
The appetite is often increased.

Therefore, the correct answer is option D.

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