A nurse is teaching a client who has hypothyroidism. Which of the following information should the nurse include in the teaching? (Select all apply.)

A. Hypothyroidism requires lifelong thyroid hormone replacement therapy, not just for several months. B. Weight gain is a common symptom of hypothyroidism due to a slowed metabolism. C. Regular laboratory testing (such as TSH levels) is necessary to monitor the effectiveness of thyroid hormone replacement therapy and adjust the dose as needed. D. Hypothyroidism typically causes decreased perspiration, dry skin, and cold intolerance—not increased sweating. E. Increasing iodine intake is not typically necessary, especially in developed countries where iodine deficiency is rare. Treatment focuses on hormone replacement, not dietary iodine.