Is hyperthyroidism accompanied with the weight gain?

Hyperthyroidism is not typically accompanied with weight gain. In fact, one of the common symptoms of hyperthyroidism is weight loss. This is because hyperthyroidism causes the body's metabolism to speed up, which can lead to weight loss even if a person is eating more than usual. Other symptoms of hyperthyroidism can include increased appetite, nervousness, anxiety, heat intolerance, and rapid heartbeat.