Dietary contraindications for patients with thyroid disorders depend on the type of thyroid disorder the patient is suffering from. Hyperthyroidism requires avoidance of iodine-rich foods and hypothyroidism requires avoidance of high-fat foods, and active treatment is recommended under medical supervision. Dietary contraindications for patients with thyroid disorders depend on the type of thyroid disorder the patient is suffering from. Hyperthyroidism is caused by too much thyroid hormone, and iodine is the raw material for synthesizing thyroid hormone, so patients with hyperthyroidism should limit the intake of iodine-rich foods, such as kelp, seaweed, seafood and so on. Hypothyroidism is caused by insufficient thyroid hormone or thyroid hormone resistance. Hypothyroidism may result in elevated blood lipids, so patients with hypothyroidism should avoid eating high-fat foods in their diet. Patients with thyroid disease should seek timely medical treatment and actively cooperate with the doctor.