The use of iodine by radioactivity is a strategy that is used to prevent injury from nuclear radiation and, therefore, all people who have been exposed to this type of radiation should take 1 iodine capsule per day, under medical supervision.
Iodine use is important because when the body does not find enough iodine in its diet, it looks for iodine present in radiation, but this type of radioactive iodine is bad for health and can cause thyroid diseases and even cancer. The purpose of taking iodine is to make sure that the thyroid does not need to absorb more iodine, as its reserves are full.