TitleHow low can you go? Air pollution affects mortality at very low levels.
Publication TypeJournal Article
Year of Publication2022
AuthorsWeichenthal, S, Pinault, L, Christidis, T, Burnett, RT, Brook, JR, Chu, Y, Crouse, DL, Erickson, AC, Hystad, P, Li, C, Martin, RV, Meng, J, Pappin, AJ, Tjepkema, M, van Donkelaar, A, Weagle, CL, Brauer, M
JournalSci Adv
Volume8
Issue39
Paginationeabo3381
Date Published09/2022
ISSN2375-2548
Abstract

The World Health Organization (WHO) recently released new guidelines for outdoor fine particulate air pollution (PM) recommending an annual average concentration of 5 μg/m. Yet, our understanding of the concentration-response relationship between outdoor PM and mortality in this range of near-background concentrations remains incomplete. To address this uncertainty, we conducted a population-based cohort study of 7.1 million adults in one of the world's lowest exposure environments. Our findings reveal a supralinear concentration-response relationship between outdoor PM and mortality at very low (<5 μg/m) concentrations. Our updated global concentration-response function incorporating this new information suggests an additional 1.5 million deaths globally attributable to outdoor PM annually compared to previous estimates. The global health benefits of meeting the new WHO guideline for outdoor PM are greater than previously assumed and indicate a need for continued reductions in outdoor air pollution around the world.
DOI10.1126/sciadv.abo3381
Alternate JournalSci Adv
PubMed ID36170354