Iodine is an important trace element in the synthesis of thyroid hormones, which act through the bloodstream on target organs, especially the liver, kidneys, heart and developing brain. Iodine deficiency can affect children's height, weight, and bone, muscle and sexual development, in which the fetal and infant brain development and nervous system development of irreversible damage. Prolonged excessive intake of iodine can cause thyroid disorders such as hyperthyroidism, goiter and hypothyroidism. Because infants and young children are not yet physically developed, they may be more sensitive to iodine overdose.
The World Health Organization's recommended iodine intake is 150ug (micrograms) per day for adults, 70ug for children, and 200ug for pregnant and lactating women.
China's salt is iodized, which basically meets the human body's needs, and there's no need to eat iodized foods, such as Nestlé iodized powdered milk. Whether or not iodine deficiency should be clearly diagnosed in the hospital, the need for iodine supplementation to be carried out under the guidance of a doctor.