Association between mixed exposure to endocrine-disrupting chemicals and cognitive function in elderly Americans

内分泌系统 联想(心理学) 认知 医学 环境卫生 老年学 心理学 内科学 精神科 激素 心理治疗师
作者
Qiting Zuo,Xiufen Gao,Xinmiao Fu,Lingyun Song,Mq. Cen,Shaozheng Qin,Jianyong Wu
出处
期刊:Public Health [Elsevier]
卷期号:228: 36-42
标识
DOI:10.1016/j.puhe.2023.12.021
摘要

Studies exploring the relationship between mixed exposure to endocrine-disrupting chemicals (EDCs) and cognition are limited, with even more scarce studies conducted in the elderly. The aim of this study was to investigate the association between mixed exposure to five categories of EDCs and cognition in elderly Americans. Cross-sectional study. 727 participants from the 2011–2014 National Health and Nutrition Examination Survey were incorporated into this study, and the levels of 47 EDC metabolites were measured. Cognitive function was assessed using immediate recall test (IRT), delayed recall test (DRT), animal fluency test (AFT), and digit symbol substitution test (DSST), and all the cognitive test scores were standardized. The individual and combined effects of EDC metabolites on the cognitive function in older adults were assessed using three analytical methods. The results showed that exposure to perfluorononanoic acid, polychlorinated biphenyl (PCB) 199, and PCB 206 was associated with the z-scores on the cognitive tests. Negative associations between mixed exposure to EDCs and the AFT and Global z-scores and a positive relationship with the DRT z-score were found in the WQS regression. The BKMR results revealed a positive trend between the mixture of EDCs and the DRT z-score. However, compared to the median, exposure to mixtures in the 45th percentile and below was associated with a decreased DRT z-score. Mixed exposure to EDCs may adversely affect the global cognitive function in elderly individuals. Necessary measures are needed to restrict EDCs use to protect the cognitive health of older adults.
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