Thyroid tumors are a type of thyroid disease. The thyroid gland is an important endocrine organ in the neck of the body, which secretes mainly thyroid hormones, in addition to calcitonin. Iodine is an important raw material for the synthesis of thyroid hormones, and iodine deficiency can cause certain thyroid disorders, while excessive iodine intake can also trigger thyroid disorders. 80-90% of human iodine comes from food, 10-20% from drinking water and 5% from air, so iodine from food is the main source of human iodine. A variety of diseases can occur in the thyroid gland itself, and diseases of other body systems can sometimes affect thyroid function. Goiter (nodules), various types of thyroiditis, primary hypothyroidism, etc. These diseases are usually treated with medication or surgery and do not require large amounts of iodine supplementation, but generally just a normal diet. If you have a thyroid tumor, you do not need to take iodine-rich foods such as seaweed and nori. Endemic goiter, commonly known as “big neck disease”, is an iodine deficiency disease and can only be completely prevented by iodine supplementation. The most fundamental measure to prevent iodine deficiency is salt iodization, which is safe, effective, life-like, long-term, economical, and easy to promote. One type of thyroid disease is called “hyperthyroidism”, or “hyperthyroidism” for short. For this disease, it is important not to eat iodine tablets or foods rich in iodine, such as sea plants like kelp and seaweed, and sea animals like sea fish, shrimp and crabs with medium iodine content.