Abstract
The phenomenon of population aging has brought forth the challenge of frailty. Nevertheless, the contribution of environmental exposure to frailty remains ambiguous. Our objective was to investigate the association between phenols, phthalates (PAEs), and polycyclic aromatic hydrocarbons (PAHs) with frailty. We constructed a 48-item frailty index using data from the National Health and Nutrition Examination Survey (NHANES). The exposure levels of 20 organic contaminants were obtained from the survey circle between 2005 and 2016. The association between individual organic contaminants and the frailty index was assessed using negative binomial regression models. The combined effect of organic contaminants was examined using weighted quantile sum (WQS) regression. Dose–response patterns were modeled using generalized additive models (GAMs). Additionally, an interpretable machine learning approach was employed to develop a predictive model for the frailty index. A total of 1566 participants were included in the analysis. Positive associations were observed between exposure to MIB, P02, ECP, MBP, MHH, MOH, MZP, MC1, and P01 with the frailty index. WQS regression analysis revealed a significant increase in the frailty index with higher levels of the mixture of organic contaminants (aOR, 1.12; 95% CI, 1.05–1.20; p < 0.001), with MIB, ECP, COP, MBP, P02, and P01 identified as the major contributors. Dose–response relationships were observed between MIB, ECP, MBP, P02, and P01 exposure with an increased risk of frailty (both with p < 0.05). The developed predictive model based on organic contaminants exposure demonstrated high performance, with an R2 of 0.9634 and 0.9611 in the training and testing sets, respectively. Furthermore, the predictive model suggested potential synergistic effects in the MIB-MBP and P01-P02 pairs. Taken together, these findings suggest a significant association between exposure to phthalates and PAHs with an increased susceptibility to frailty.
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Data from the National Health and Nutrition Examination Survey (NHANES) are available at https://www.cdc.gov/nchs/nhanes/index.htm.
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Acknowledgements
We appreciate the contribution of all staffs and participants in the U.S. National Health and Nutrition Examination Survey (NHANES).
Funding
This work was supported by Guangxi Clinical Ophthalmic Research Center (Grant numbers [GuikeAD19245193]).
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Wenxiang Li: Investigation, Methodology, Validation, Writing – original draft. Guangyi Huang: Writing – review & editing. Ningning Tang: Investigation, Validation, Formal analysis. Peng Lu: Software. Li Jiang: Resources. Jian Lv: Conceptualization. Yuanjun Qin: Data Curation. Yunru Lin: Visualization. Fan Xu: Conceptualization, Supervision, Methodology. Daizai Lei: Conceptualization, Formal analysis, Writing – review & editing.
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Wenxiang Li, Guangyi Huang, Ningning Tang, Peng Lu, and Li Jiang are Co-first author, and contributed equally to the present study.
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Li, W., Huang, G., Tang, N. et al. Association between co-exposure to phenols, phthalates, and polycyclic aromatic hydrocarbons with the risk of frailty. Environ Sci Pollut Res 30, 105181–105193 (2023). https://doi.org/10.1007/s11356-023-29887-7
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DOI: https://doi.org/10.1007/s11356-023-29887-7