We are not strangers to hyperthyroidism, but most of us may still think that hyperthyroidism is a phenomenon such as big neck or protruding eyes. They also think that hyperthyroidism is not a big problem and can be easily cured. In the treatment of hyperthyroidism, the most common clinical treatment is iodine-131, so whether this iodine-131 treatment is safe is probably the most important concern of hyperthyroidism patients. Today we will learn more about it. Iodine-131 treatment for hyperthyroidism is the use of the thyroid gland’s high iodine uptake capacity and the biological effect of 131 iodine emitting beta rays to play a useful role in the treatment of hyperthyroidism. 131 iodine mainly emits beta rays in the decay, which have a short range of only 2 mm in the tissue, and the ionizing radiation is limited to the local thyroid gland and does not involve adjacent tissues, emitting beta rays to kill follicular cells and reduce thyroid hormone secretion by destroying the glandular follicles. It also reduces the production of antibodies by the lymphocytes in the thyroid gland and is effective. The advantage of iodine-131 treatment for hyperthyroidism is that it is a convenient, one-time drug that can be taken once, and its efficiency is over 90%. However, the use of iodine-131 treatment for hyperthyroidism also has certain side effects, the main side effects are: 1. Some patients will develop hypothyroidism soon after iodine-131 treatment, and some patients will become lifelong hypothyroid and need to take thyroid preparations every day. 2. Iodine-131 treatment mainly destroys the patient’s thyroid cells, but it can lead to aggravation of the disease within a short period of time, and in severe cases, it can even lead to aggravation of heart failure and swelling of the eyes. 3. Iodine 131 is a radioactive treatment and may cause radiation thyroiditis. It can be seen that the effect of iodine-131 treatment for hyperthyroidism is good, but there is also a certain hold end. There is no treatment that is without a little risk. During the treatment period, patients must try to rest in bed to help their body recover. In addition, patients can try to consume more vitamins and more easily digestible food in their daily diet.