期刊
JOURNAL OF ALZHEIMERS DISEASE
卷 70, 期 -, 页码 S145-S163出版社
IOS PRESS
DOI: 10.3233/JAD-180631
关键词
Air pollutants; cognitive decline; dementia; particulate matter
资金
- Australian National Health and Medical Research Council Dementia Centre for Research Collaboration
- NHMRC Centre of Excellence in Cognitive Health [APP1100579]
- NHMRC [APP1102694]
- UK National Institute for Health Research
- ARC Centre of Research Excellence in Population Ageing Research [CE170100005]
- National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards at King's College London
- Public Health England (PHE)
- Imperial College London
Background: Both air pollution and dementia are current and growing global issues. There are plausible links between exposure to specific air pollutants and dementia. Objective: To systematically review the evidence base with respect to the relationship between air pollution and later cognitive decline and dementia. Methods: Medline, Embase, and PsychINFO (R) were searched from their inception to September 2018, for publications reporting on longitudinal studies of exposure to air pollution and incident dementia or cognitive decline in adults. Studies reporting on exposure to tobacco smoke including passive smoking or on occupational exposure to pollutants were excluded. Using standard Cochrane methodology, two readers identified relevant abstracts, read full text publications, and extracted data into structured tables from relevant papers, as defined by inclusion and exclusion criteria. Papers were also assessed for validity. CRD42018094299 Results: From 3,720 records, 13 papers were found to be relevant, with studies from the USA, Canada, Taiwan, Sweden, and the UK. Study follow-up ranged from one to 15 years. Pollutants examined included particulate matter <= 2.5 mu (PM2.5), nitrogen dioxide (NO2), nitrous oxides (NOx), carbon monoxide (CO), and ozone. Studies varied in their methodology, population selection, assessment of exposure to pollution, and method of cognitive testing. Greater exposure to PM2.5, NO2/NOx, and CO were all associated with increased risk of dementia. The evidence for air pollutant exposure and cognitive decline was more equivocal. Conclusion: Evidence is emerging that greater exposure to airborne pollutants is associated with increased risk of dementia.
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