Air Pollution in Pregnancy Is Not Just Background Noise

New national data show that when exposure occurs during pregnancy may matter as much as how much exposure there is.

Study discussed:
Cowell W, Hsu HH, Just AC, Kloog I, Coull BA, Wilson A, et al. Air Pollution Exposure and Birth Weight in the ECHO Cohort. JAMA Network Open. 2025;8(12):e2551459. doi:10.1001/jamanetworkopen.2025.51459.
Open access: https://jamanetwork.com/journals/jamanetworkopen/fullarticle/28251459