Effect of iodine prophylaxis during pregnancy on neurocognitive development of children during the first two years of life.

Context: The association between thyroid function during pregnancy and the later mental and psychomotor development of the child is supported by numerous experimental, clinical, and epidemiological studies.

Objective: The aim of the study was to evaluate the psychological development of infants aged 3 to 18 months whose mothers had received 300 microg of potassium iodide during the first trimester of their pregnancy and compare with infants whose mothers had received no iodine supplements.

Design And Study Subjects: The study included 133 women who had received 300 microg of potassium iodine and 61 women who had received no iodine supplements.