You can eat potatoes for thyroid nodules because they are not spicy, irritating, etc., and they do not cause sudden enlargement of thyroid nodules, nor do they cause nodules to become cancerous, etc. Potatoes contain a lot of starch, which mainly provides sugar and helps to increase the nutrition of the patient. Once a nodule in the thyroid gland is detected, it should be examined in a hospital, usually by ultrasound examination of the thyroid gland, to determine the benignity and malignancy of the nodule, to prevent thyroid cancer from being detected early and leading to neck metastasis, mediastinal metastasis, and systemic metastasis. If the nodule is benign, there are two types of cases: 1) if the nodule is small, surgery is not necessary for the time being; 2) if the nodule is large, such as larger than 4cm, with pressure symptoms or causing hoarseness, surgery should be considered for removal.