Survey of iodine nutritional status in 2011, Zhejiang, China
▪ Author : G Mao, G Ding, X Lou, R Zhang, P Zheng, Z Mo, X Wang, W Zhu, J Zhou, F Gu
▪ Keyword : iodine deficiency disorder (IDD), universal salt iodization (USI), urinary iodine concentration (UIC), dietary iodine intake, iodine excess
▪ Content : Background: Universal salt iodization (USI) was introduced in China in 1995, but whether the iodine status is optimal is questionable. This study was conducted to assess the iodine nutrition among Zhejiang population in
coastal regions in China. Methods: A cross sectional survey for iodine nutritional status was conducted with general population (n=10,350), including pregnant and lactating women (n=450 each) selected by stratified multi-stage sampling. Iodine content in drinking water, table salt and urine, were determined using arsenic-cerium catalytic spectrophotometry, the direct titration and the arsenic-cerium catalytic spectrophotometry, respectively, and
daily iodine intake was estimated by 3 days of 24-hour recall method.