Iodine has an impact on the proper functioning of the thyroid gland, nervous system and metabolism, as well as the health of the skin and hair. What is the daily need for iodine and who is particularly at risk of iodine deficiency? What is the difference between Lugol's liquid and iodine and what are their applications? What is the risk of an overdose of iodine? In what form is iodine used in case of radioactive contamination?