[Study on iodine nutritional status of target population due to different iodine concentrations in drinking water after stopped iodized salt].

Objective: To investigate the iodine nutritional status of key population living areas with iodine excess in drinking water before and after stopped iodized salt supply to provide strategies of control excessive iodine.

Methods: The levels of iodine in drinking water, edible salt of household and urine of school-age children and child-beard age women were investigated at four villages A, B, C and D which iodine concentrations of 50-100, 100-150, 150-300 and more than 300microg/L. The results of iodine in water, edible salt, urine and thyroid goiter were observed before stopping iodized salt.