Patients with hypothyroidism can eat watermelon, and eating watermelon in moderation generally has no effect on hypothyroidism. The onset of hypothyroidism is related to autoimmunity, pituitary pathology, certain medications, thyroid destruction, iodine deficiency and other factors, and dietary attention should be paid to appropriately increase the intake of iodine. Watermelon is rich in sugar, vitamins, amino acids, potassium, calcium, iron and other nutrients, patients with hypothyroidism can also be eaten, after eating can help the body to replenish the nutrients needed. But be careful to eat in moderation, so as not to cause bloating, diarrhea and other discomforts. Patients with hypothyroidism should ensure that their diet is nutritionally adequate and well-balanced. It should be noted that patients with hypothyroidism need to go for regular checkups and under the guidance of the doctor for treatment.