New SoGA 2025 Report

The report covers global air quality and health impacts, including data on noncommunicable diseases.
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Research Reports

HEI’s mission is to provide credible science to support environmental regulations and other policy decisions. The results of each HEI-funded project undergo peer-review by outside scientists and the Health Review Committee. The HEI Research Reports contain the Investigator’s Report and the Review Committee’s evaluation of the study, summarized in a Commentary or short Critique.

ISSN 1041-5505 (print)        ISSN 2688-6855 (online) 

Scalable Multipollutant Exposure Assessment Using Routine Mobile Monitoring Platforms

Research Report 216
Joshua Apte
Sarah E Chambliss
Kyle P Messier
Shahzad Gani
Adithi R Upadhya
Meenakshi Kushwaha
et al.
2024
Topics: 
Nitrogen Oxides
Particulate Matter
Traffic-related
Exposure Methods

This report presents the results of a study led by Joshua Apte of the University of California, Berkeley, a recipient of HEI’s Walter A. Rosenblith New Investigator Award. Apte and colleagues evaluated the use of mobile monitoring for several air pollution mapping and exposure assessment applications.

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Chemical and Cellular Formation of Reactive Oxygen Species from Secondary Organic Aerosols in Epithelial Lining Fluid

Research Report 215
Manabu Shiraiwa
Ting Fang
Jinlai Wei
Pascale SJ Lakey
Brian CH Hwang
Kasey C Edwards
et al.
2023
Topics: 
Particulate Matter
Biological Methods

This report presents the findings of a study led by Manabu Shiraiwa of the University of California, Irvine, a recipient of HEI’s Walter A. Rosenblith New Investigator Award. Shiraiwa and colleagues evaluated the mechanisms of aerosol-induced reactive oxygen species formation by two pathways in the respiratory tract: by chemical reactions  and by immune cells called macrophages.

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Long-Term Exposure to AIR Pollution and COVID-19 Mortality and Morbidity in DENmark: Who Is Most Susceptible? (AIRCODEN)

Research Report 214
Zorana J Andersen
Jiawei Zhang
Youn-Hee Lim
Rina So
Jeanette T Jørgensen
Laust H Mortensen
et al.
2023
Topics: 
Nitrogen Oxides
Particulate Matter

This report presents a study that evaluated whether there is an association between exposure to outdoor air pollution and the risk of COVID-19 incidence, hospitalization, and mortality in a cohort of 3.7 million Danish adults.

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Ambient Air Pollution and All-Cause and Cause-Specific Mortality in an Analysis of Asian Cohorts

Research Report 213
George S. Downward
Roel Vermeulen
2023
Topics: 
Nitrogen Oxides
Particulate Matter
Global Health

This study by Dr. George S. Downward and Dr. Roel Vermeulen from Utrecht University, the Netherlands, addresses a clear research gap by leveraging harmonized data from the Asia Cohort Consortium, a large multicenter collaborative research effort in Asia that began in 2008.

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Characterizing Determinants of Near-Road Ambient Air Quality for an Urban Intersection and a Freeway Site

Research Report 207
H Christopher Frey
Andrew P Grieshop
Andrey Khlystov
John J Bang
Nagui Rouphail
Joseph Guinness
et al.
2022
Topics: 
Nitrogen Oxides
Particulate Matter
Traffic-related
Exposure Methods

This report presents a study led by H. Christopher Frey of North Carolina State University in Raleigh. The investigators measured six air pollutants (nitrogen oxides, ultrafine particles, black carbon, fine particles, nitrogen dioxide, and ozone) near a freeway and in an urban area.

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