Household air pollution from solid fuel use as a dose-dependent risk factor for cognitive impairment in northern China

Author:

Tseng Tzu-Wei Joy,Carter Ellison,Yan Li,Chan Queenie,Elliott Paul,Ezzati Majid,Kelly Frank,Schauer James J.,Wu Yangfeng,Yang Xudong,Zhao Liancheng,Baumgartner Jill

Abstract

AbstractThe relationship between exposure to household air pollution (HAP) from solid fuel use and cognition remains poorly understood. Among 401 older adults in peri-urban northern China enrolled in the INTERMAP-China Prospective Study, we estimated the associations between exposure to HAP and z-standardized domain-specific and overall cognitive scores from the Montreal Cognitive Assessment. Interquartile range increases in exposures to fine particulate matter (53.2-µg/m3) and black carbon (0.9-µg/m3) were linearly associated with lower overall cognition [− 0.13 (95% confidence interval: − 0.22, − 0.04) and − 0.10 (− 0.19, − 0.01), respectively]. Using solid fuel indoors and greater intensity of its use were also associated with lower overall cognition (range of point estimates: − 0.13 to − 0.03), though confidence intervals included zero. Among individual cognitive domains, attention had the largest associations with most exposure measures. Our findings indicate that exposure to HAP may be a dose-dependent risk factor for cognitive impairment. As exposure to HAP remains pervasive in China and worldwide, reducing exposure through the promotion of less-polluting stoves and fuels may be a population-wide intervention strategy to lessen the burden of cognitive impairment.

Funder

Canadian Institutes for Health Research

Fonds de la recherche en santé du Québec

Wellcome Trust

Foundation for Innovative Research Groups of the National Natural Science Foundation of China

National Natural Science Foundation of China

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

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