Iodine deficiency is one of the main causes of health problems in people around the world. But a new study decided to approach this issue from the other side: can iodine be too much?Iodine is a mineral that is entering the body of iodized salt, seafood, eggs, dairy products and certain types of bread. It is used by the thyroid gland to regulate metabolism and development of the body, so it is especially important for children and adolescents.Iodine deficiency in children leads to abnormalities in brain development. Therefore, most research has been directed to the study of iodine deficiency. Far fewer people are thinking about the problem of the abundance of this mineral. In the new study, scientists from America and China studied adults who were asked to use different amounts of iodine in the week. Scientists have found that when large doses of iodine - 400 micrograms per day, and more subjects began to experience an underactive thyroid gland (hypothyroidism). This was observed only in the level of hormones of a thyroid gland and was not accompanied by the usual symptoms of hypothyroidism: fatigue, depression, dry skin and weight gain.The researchers came to the conclusion that it is not necessary to use more than 800 micrograms of iodine per day, which is slightly less than in America limit of 1,100 micrograms. However, a person with a normal diet, the excess iodine is not threatened, and vegetarians, excluded from the diet all animal food, not get even to normal.
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