Iodine Nutrition,Thyroid-stimulating Hormone,and Related Factors of Postpartum Women from three Different Areas in China:A Cross-sectional Survey
- Author:
Yun Xiao SHAN
1
;
Yan ZOU
;
Chun Li HUANG
;
Shan JIANG
;
Wen Wei ZHOU
;
Lan Qiu QIN
;
Qing Chang LIU
;
Yan Xiao LUO
;
Xi Jia LU
;
Qian De MAO
;
Min LI
;
Yu Zhen YANG
;
Chen Li YANG
Author Information
- Keywords: Median urinary iodine concentration; Thyroid-stimulating hormone; Vitamin A; Vitamin D; Postpartum women
- From: Biomedical and Environmental Sciences 2024;37(3):254-265
- CountryChina
- Language:Chinese
- Abstract: Objective Studies on the relationship between iodine,vitamin A(VA),and vitamin D(VD)and thyroid function are limited.This study aimed to analyze iodine and thyroid-stimulating hormone(TSH)status and their possible relationships with VA,VD,and other factors in postpartum women. Methods A total of 1,311 mothers(896 lactating and 415 non-lactating)from Hebei,Zhejiang,and Guangxi provinces were included in this study.The urinary iodine concentration(UIC),TSH,VA,and VD were measured. Results The median UIC of total and lactating participants were 142.00 μg/L and 139.95 μg/L,respectively.The median TSH,VA,and VD levels in all the participants were 1.89 mIU/L,0.44 μg/mL,and 24.04 ng/mL,respectively.No differences in the UIC were found between lactating and non-lactating mothers.UIC and TSH levels were significantly different among the three provinces.The rural UIC was higher than the urban UIC.Obese mothers had a higher UIC and a higher prevalence of excessive TSH.Higher UICs and TSHs levels were observed in both the VD deficiency and insufficiency groups than in the VD-sufficient group.After adjustment,no linear correlation was observed between UIC and VA/VD.No interaction was found between vitamins A/D and UIC on TSH levels. Conclusion The mothers in the present study had no iodine deficiency.Region,area type,BMI,and VD may be related to the iodine status or TSH levels.
