Hyperthyroidism is hyperthyroidism, such patients can eat watermelon. Hyperthyroidism is a condition in which the thyroid gland produces too much thyroid hormone, causing a series of hypermetabolic clinical symptoms such as agitation, excessive sweating and increased heart rate. Watermelon is a vitamin C-rich fruit, generally has no effect on the body’s thyroid hormone levels, so for patients with hyperthyroidism can eat watermelon. However, it should be noted that watermelon should not be eaten too much, because watermelon itself is rich in sugar, so eating too much may cause significant fluctuations in blood glucose, especially with diabetes, is not recommended to eat a lot of patients. For people suffering from hyperthyroidism, it is recommended to follow the doctor’s instructions for treatment.