Evidence map›Paper›PMID 40073924›Full record

SynthesisEnvironmental research2025

A systematic review of air pollution exposure and brain structure and function during development.

Jessica Morrel, Michelle Dong, Michael A Rosario, Devyn L Cotter, Katherine L Bottenhorn, Megan M Herting

Abstract readSystematic Review
In one paragraph

Synthesis in Environmental research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed.

  1. Article
  2. Article
  3. Wearable Personal PMmedRxiv : the preprint server for health sciences · 2026
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. White matter reflects the childhood exposome.bioRxiv : the preprint server for biology · 2026
    Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Jessica MorrelDepartment of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA; Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA.
Michelle DongKeck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Michael A RosarioDepartment of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA.
Devyn L CotterDepartment of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA; Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, USA.
Katherine L BottenhornDepartment of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA; Department of Psychology, Florida International University, Miami, FL, USA.
Megan M HertingDepartment of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA. Electronic address: herting@usc.edu.

Funding

Translational Research Support CoreP30ES007048 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ROB S MCCONNELL · 1996 to 2026
$46.4M
Training Grant in Genomic Analysis and InterpretationT32ES013678 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI GAUDERMAN, WILLIAM JAMES, MCCONNELL, ROB S · 2006 to 2023
$5.6M
Urban air pollution and neurobehavioral trajectories in the ABCD studyR01ES031074 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI Megan Marie Herting · 2020 to 2026
$4.4M
The role of air pollution in emotional neurodevelopment and risk for psychiatric disordersR01ES032295 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI HERTING, MEGAN MARIE · 2020 to 2024
$2.6M
Endocrine-mediated pubertal brain network development: Bridging datasets with machine learningK99MH135075 · NIMH · UNIVERSITY OF SOUTHERN CALIFORNIA · PI BOTTENHORN, KATHERINE LOUISE · 2024 to 2025
$248k
The ABCD Study and Brain Health: Navigating Environmental Hazards and the Quest for Neurodevelopmental Intersectional Health EquityK00ES036895 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ROSARIO, MICHAEL ANTHONY · 2024 to 2024
$85k
NIEHS NIH HHS K00 ES036895NIEHS NIH HHS P30 ES007048NIEHS NIH HHS R01 ES031074NIEHS NIH HHS R01 ES032295NIEHS NIH HHS T32 ES013678NIMH NIH HHS K99 MH135075
6 · The paper itself

Abstract

objectivesAir pollutants are known neurotoxicants. In this updated systematic review, we evaluate new evidence since our 2019 systematic review on the effect of outdoor air pollution exposure on childhood and adolescent brain structure and function as measured by magnetic resonance imaging (MRI).

methodsUsing PubMed, Web of Science, and Scopus we conducted an updated literature search and systematic review of articles published through January 2025, using key terms for air pollution and functional and/or structural MRI. Two raters independently screened all articles using Covidence and implemented the risk of bias instrument for systematic reviews used to inform the World Health Organization Global Air Quality Guidelines.

resultsWe identified 29 relevant papers, and 20 new studies met our inclusion criteria. Including six studies from our 2019 review, the 26 publications to date include study populations from the United States, Netherlands, Spain, and United Kingdom. Studies investigated exposure periods spanning pregnancy through early adolescence, and estimated air pollutant exposure levels via personal monitoring, geospatial residential estimates, or school courtyard monitors. Brain MRI occurred when children were on average 6-14.7 years old; however, one study assessed newborns. Several MRI modalities were leveraged, including structural morphology, diffusion tensor imaging, restriction spectrum imaging, arterial spin labeling, magnetic resonance spectroscopy, as well as resting-state and task-based functional MRI. Air pollutants were associated with widespread brain differences, although the magnitude and direction of findings are largely inconsistent, making it difficult to draw strong conclusions.

conclusionPrenatal and childhood exposure to outdoor air pollution is associated with structural and functional brain variations. Compared to our initial 2019 review comprised of only cross-sectional studies, the current literature now includes longitudinal studies and more advanced neuroimaging methods. Further research is needed to clarify the effects of developmental timing, along with the downstream implications of outdoor air pollution exposure on children's cognitive and mental health.

Indexed as

Air PollutantsAir PollutionBrainEnvironmental ExposureAdolescentChildFemaleHumansMagnetic Resonance ImagingPregnancyAir PollutantsAir pollutionMagnetic resonance imagingNeurodevelopmentNeurotoxicityParticulate matter

Identifiers

PMID40073924
PMCPMC12086053

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.