[The results of the "tiromobil" epidemiological trial of pregnant women in the Russian Federation].

Aim: To study structural and functional changes in the thyroid gland (TG) in pregnant women living in iodine-deficiency regions; to evaluate efficacy of prophylactic measures.

Material And Methods: Random sample method was used for examination of 1090 pregnant women living in the regions with different iodine provision. All the participants were examined clinically, measurements were made of thyroid size, TTH, free T4, iodinuria.

[The problem of iodine deficiency in the Russian Federation and ways of its solution in a number of countries of the world].

International practice of the last two decades has demonstrated that universal salt iodization is the most effective, reliable and cost-effective method of preventing iodine deficiency in nutrition.