Urine Iodine Status of 8-10-Year Old School Children in Yazd Province during Ten Years (2007-2016)

Background: Iodine is an essential element for growth and development and itsinadequate intake leads to insufficient production of thyroid hormone. Indeveloped countries iodine deficiency (ID) is one of the reformable factors. So,this study determined urinary iodine (UI) status of 8-10-year old school childrenin Yazd province during 2007 to 2016. Methods: This cross-sectional anddescriptive study was conducted on 2236 students who were randomly selectedfrom urban and rural regions with equal proportion of gender. Questionnaireswere administered to gather the required descriptive data and then morningsamples of urine were collected. Iodine concentration was determined withtitration and acidic digestion. Data were analyzed through SPSS software.Results: During the study period, the percentage of students with UI of lowerthan 2 μg/dL, was zero and only 2.37 % of them had a UI level in the range of 2-4.90 μg/dL. Median of UI was 18.40 ± 7.70 μg/dL level of UI in normal rangeshowed noticeable increase from 2013 to 2016. Level of normal UI in ten yearswas 79.02%. Conclusions: According to the results of this study, Yazd provincewas considered IDD free similar to some other provinces. Also, level of UImore than 30 μg/dL was decreased. It is clear that this approaches needcontinuous evaluation such as annual evaluation of UI in 8-10 years old studentsat province level and every five years evaluation at national level.

کلیدواژه ها:

Students ، Urinary iodine ، Iodine deficiency disorder (IDD) ، Yazd