ABSTRACT
Objective To study the iodine nutritional status of pregnant women in Foshan City,Guangdong Province,and to provide basis for iodine supplementation scientifically for them.Methods In 2017,five districts Chancheng,Nanhai,Shunde,Sanshui and Gaoming in Foshan were selected.Each monitoring site was divided into five sections according to stratified random sampling in five directions:east,west,south,north and middle.One township (street) was taken in each section,and 20 pregnant women were taken from each township (street) to detected their family salt iodine and urinary iodine levels.Results A total of 500 edible salt samples were collected from the families of pregnant women,the median of salt iodine was 24.8 mg/kg,the qualified iodized salt consumption rate was 95.8％ (479/500),and the iodized salt coverage rate was 99.0％ (495/500).There was a statistically significant difference in the iodine content of edible salt of pregnant women in diffierent districts (H =26.9,P ＜ 0.05).A total of 500 urine samples were collected from pregnant women,the median of urinary iodine was 138.9 μg/L.There was a statistically significant difference in the levels of urinary iodine content of pregnant women in different districts (H =14.5,P ＜ 0.05).There was no statistically significant difference in urinary iodine of pregnant women during different stages of pregnancy (H =2.6,P ＞ 0.05).Conclusions The iodine intake for pregnant women is in a state of deficiency (＜ 150 μg/L) in Foshan of Guangdong Province.It is necessary to further strengthen the health education of key populations,and improve the iodine nutritional status of pregnant women.