Air pollution exposure and birth weight

JAMA Network Open

2025-12-26

(Press-News.org) About The Study: In this cohort study, higher fine particulate matter (PM2.5) exposure was associated with lower birth weight for gestational age z score, with critical windows identified during early pregnancy to mid-pregnancy; however, findings varied by sex and region. Understanding windows of susceptibility to environmental exposures can help guide research on underlying biological processes and can inform strategies for limiting exposure during certain periods of pregnancy.

Corresponding Author: To contact the corresponding author, Whitney Cowell, PhD, email whitney.cowell@nyulangone.org.

To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/

(doi:10.1001/jamanetworkopen.2025.51459)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication.

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Air pollution exposure and birth weight

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