Objective This study assesses the impact of iodine-rich processed foods and dining places on the iodine nutritional status of children.Methods School-aged children(SAC) in seven provinces in China were selected by sch...Objective This study assesses the impact of iodine-rich processed foods and dining places on the iodine nutritional status of children.Methods School-aged children(SAC) in seven provinces in China were selected by school-based multistage sampling. Urinary iodine, salt iodine, and thyroid volume(TVOL) were determined. Questionnaires were used to investigate dining places and iodine-rich processed foods. The water iodine was from the2017 national survey. Multi-factor regression analysis was used to find correlations between variables.Results Children ate 78.7% of their meals at home, 15.1% at school canteens, and 6.1% at other places.The percentage of daily iodine intake from water, iodized salt, iodine-rich processed foods, and cooked food were 1.0%, 79.2%, 1.5%, and 18.4%, respectively. The salt iodine was correlated with the urinary iodine and TVOL, respectively(r = 0.999 and-0.997, P < 0.05). The iodine intake in processed foods was weakly correlated with the TVOL(r = 0.080, P < 0.01). Non-iodized salt used in processed foods or diets when eating out had less effect on children’s iodine nutrition status.Conclusion Iodized salt remains the primary source of daily iodine intake of SAC, and processed food has less effect on iodine nutrition. Therefore, for children, iodized salt should be a compulsory supplement in their routine diet.展开更多
This study aimed to describe the situation of iodine supplementation in pregnant women,and to explore the effects of such supplementation measures on iodine nutrition and thyroid function.Pregnant women in seven provi...This study aimed to describe the situation of iodine supplementation in pregnant women,and to explore the effects of such supplementation measures on iodine nutrition and thyroid function.Pregnant women in seven provinces were selected by multi-stage sampling.Basic information was collected and a food frequency questionnaire was administered.Salt iodine,urinary iodine,and thyroid function were determined.Subjects were divided into five groups based on iodine supplementation.For pregnant women,the median urinary iodine concentration(MUIC)in seven provinces was 164.3μg/L,and thyroid nodules(15.75%)were a common thyroid disease.Gestation,iodine supplementation,etc.impacted iodine nutrition and thyroid function.Compared with other groups,simultaneous iodine supplementation with iodized salt,iodine-rich foods,and iodine preparations(the ISFP group)was the most effective approach for improving iodine nutrition;supplementation via iodine-rich foods only showed the lowest prevalence of TPOAb-positive(5.48%)and TgAb-positive(1.37%)diseases.In addition,pregnant women with MUIC in the 150–249μg/L range showed higher rates of TPOAb-positive(13.78%)disease and sub-hypothyroidism(5.38%)compared to those with MUIC in the 100–149μg/L range;however,goiter showed the opposite trend.Our results indicate that iodine supplementation needs vary from person to person.展开更多
基金supported by the National Nature Fund[No.81773370]the 2019 China Hygiene and Health Standard Project[No.20190502]。
文摘Objective This study assesses the impact of iodine-rich processed foods and dining places on the iodine nutritional status of children.Methods School-aged children(SAC) in seven provinces in China were selected by school-based multistage sampling. Urinary iodine, salt iodine, and thyroid volume(TVOL) were determined. Questionnaires were used to investigate dining places and iodine-rich processed foods. The water iodine was from the2017 national survey. Multi-factor regression analysis was used to find correlations between variables.Results Children ate 78.7% of their meals at home, 15.1% at school canteens, and 6.1% at other places.The percentage of daily iodine intake from water, iodized salt, iodine-rich processed foods, and cooked food were 1.0%, 79.2%, 1.5%, and 18.4%, respectively. The salt iodine was correlated with the urinary iodine and TVOL, respectively(r = 0.999 and-0.997, P < 0.05). The iodine intake in processed foods was weakly correlated with the TVOL(r = 0.080, P < 0.01). Non-iodized salt used in processed foods or diets when eating out had less effect on children’s iodine nutrition status.Conclusion Iodized salt remains the primary source of daily iodine intake of SAC, and processed food has less effect on iodine nutrition. Therefore, for children, iodized salt should be a compulsory supplement in their routine diet.
基金supported by National nature science fund, 81773370The 2019 China Hygiene and Health Standard Project, 20190502
文摘This study aimed to describe the situation of iodine supplementation in pregnant women,and to explore the effects of such supplementation measures on iodine nutrition and thyroid function.Pregnant women in seven provinces were selected by multi-stage sampling.Basic information was collected and a food frequency questionnaire was administered.Salt iodine,urinary iodine,and thyroid function were determined.Subjects were divided into five groups based on iodine supplementation.For pregnant women,the median urinary iodine concentration(MUIC)in seven provinces was 164.3μg/L,and thyroid nodules(15.75%)were a common thyroid disease.Gestation,iodine supplementation,etc.impacted iodine nutrition and thyroid function.Compared with other groups,simultaneous iodine supplementation with iodized salt,iodine-rich foods,and iodine preparations(the ISFP group)was the most effective approach for improving iodine nutrition;supplementation via iodine-rich foods only showed the lowest prevalence of TPOAb-positive(5.48%)and TgAb-positive(1.37%)diseases.In addition,pregnant women with MUIC in the 150–249μg/L range showed higher rates of TPOAb-positive(13.78%)disease and sub-hypothyroidism(5.38%)compared to those with MUIC in the 100–149μg/L range;however,goiter showed the opposite trend.Our results indicate that iodine supplementation needs vary from person to person.
