Evaluate the following statements regarding hyperthyroidism : It results from excessive production of thyroid hormones. Symptoms include weight loss and increase in metabolic rate It can cause goitre. It is commonly treated with hormone replacement therapy.

Step-by-step solution

Due to cancer of the thyroid gland or due to development of nodules of the thyroid glands, the rate of synthesis and secretion of the thyroid hormones is increased to abnormal high levels leading to a condition called hyperthyroidism which adversely affects the body physiology. Exophthalmic goitre is a form of hyperthyroidism, characterised by enlargement of the thyroid gland, protrusion of the eyeballs, increased basal metabolic rate, and weight loss, also called Graves’ disease. Thyroid hormones play an important