"Chronic Fine Particulate Matter Exposure and Hospital Admissions for Cardiovascular Diseases: A Comprehensive Study"

A population-based cohort study estimated exposure-response associations between chronic exposure to fine particulate matter (PM2.5) and risks of hospital admission for major cardiovascular diseases (CVD) in Medicare fee-for-service beneficiaries aged 65 years and older in the contiguous US from 2000 to 2016. The study found that chronic exposure to PM2.5 was associated with increased relative risks of first hospital admissions for various CVD subtypes, with no safe threshold identified. The findings suggest substantial benefits could be attained through adherence to the World Health Organization air quality guideline.