[Effect of high iodine concentration in drinking water on thyroid function of elementary school student in Tianjin].
OBJECTIVE
To study the effect of high iodine concentration in drinking water on thyroid function of elementary school student in Tianjin.


METHODS
According to the water monitoring results and determination standard of iodine concentration excess area, urine iodine level and thyroid condition of elementary students were tested in the area with high and low water iodine concentration. Meanwhile the condition of iodized salt intaked students' family was inspected.


RESULTS
The content of urine iodine and goiter rate of students in the area with high water iodine concentration were significantly higher than those with low water iodine concentration. But the iodine concentration of edible salt in students' family in the area with high water iodine concentration were significantly lower than those of students' family with low water iodine concentration.


CONCLUSIONS
High water iodine concentration could impact thyroid function of elementary students in Tianjin.
Liu
Hongliang
H
Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China.
Zeng
Qiang
Q
Han
Shuqing
S
Zhan
Wei
W
D002648:Child; D002681:China / Q000453:epidemiology; D005260:Female; D006042:Goiter / Q000453:epidemiology*; D006801:Humans; D007455:Iodine / Q000008:administration & dosage* / Q000032:analysis / Q000652:urine*; D008297:Male; D017673:Sodium Chloride, Dietary / Q000008:administration & dosage / Q000032:analysis; D013334:Students; D013961:Thyroid Gland / Q000502:physiology*; D014881:Water Supply / Q000032:analysis*
D017673:Sodium Chloride, Dietary; C034024:iodized salt; D007455:Iodine