Consumption of iodized salt is a more scientific and reasonable method of iodine supplementation. Iodine deficiency can lead to goiter, thyroid nodules, and also hypothyroidism with chills, fatigue, hair loss, swelling, and if it occurs in adolescents, it can also affect intellectual development, so iodine deficiency should be actively supplemented. Iodine-containing salt is a relatively simple, effective and affordable way to supplement iodine, and salt is a daily necessity and is sustainable. You can also eat iodine-rich foods such as seaweed, kelp, marine fish and shrimp. If iodine deficiency is obvious, dietary supplements containing iodine can be taken under medical supervision. Patients with iodine deficiency should go to the hospital and be treated under the guidance of a doctor.