Cohort Studyhigh evidence
Compound Exposure to Extreme Heat and Substantial Landscape Fire-Sourced Air Pollution on Cardiovascular Mortality.
Journal of the American College of Cardiology·July 19, 2026·PMID 42524808
Why it mattersClimate change is driving more frequent co-occurrence of extreme heat and wildfire smoke, yet their combined cardiovascular impact is poorly understood. This study provides evidence that treating these hazards independently underestimates short-term mortality risk, especially for heart failure patients.

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