Re-Exploration for Dietary Iodine Intake in Chinese Adults using the Obligatory Iodine Loss Hypothesis.
- Author:
Xiao Bing LIU
1
;
Jun WANG
2
;
Ya Jie LI
3
;
Hong Xing TAN
4
;
De Qian MAO
1
;
Yan Yan LIU
4
;
Wei Dong LI
1
;
Wei YU
4
;
Jun An YAN
4
;
Jian Hua PIAO
1
;
Chong Zheng GUO
3
;
Xiao Li LIU
4
;
Xiao Guang YANG
1
Author Information
- Publication Type:Journal Article
- Keywords: Dietary reference intakes (DRIs); Estimated average requirement (EAR); Iodine requirement; Obligatory iodine loss; Recommended nutrient intake (RNI)
- MeSH: Humans; Iodine/administration & dosage*; Male; Female; China; Young Adult; Diet; Adult; Nutritional Requirements; East Asian People
- From: Biomedical and Environmental Sciences 2025;38(8):952-960
- CountryChina
- Language:English
-
Abstract:
OBJECTIVE:This study aimed to reexplore minimum iodine excretion and to build a dietary iodine recommendation for Chinese adults using the obligatory iodine loss hypothesis.
METHODS:Data from 171 Chinese adults (19-21 years old) were collected and analyzed based on three balance studies in Shenzhen, Yinchuan, and Changzhi. The single exponential equation was accordingly used to simulate the trajectory of 24 h urinary iodine excretion as the low iodine experimental diets offered (iodine intake: 11-26 μg/day) and to further deduce the dietary reference intakes (DRIs) for iodine, including estimated average requirement (EAR) and recommended nutrient intake (RNI).
RESULTS:The minimum iodine excretion was estimated as 57, 58, and 51 μg/day in three balance studies, respectively. Moreover, it was further suggested as 57, 58, and 51 μg/day for iodine EAR, and 80, 81, and 71 μg/day for iodine RNI or expressed as 1.42, 1.41, and 1.20 μg/(day·kg) of body weight.
CONCLUSION:The iodine DRIs for Chinese adults were established based on the obligatory iodine loss hypothesis, which provides scientific support for the amendment of nutrient requirements.
