Three‑day weather heart‑attack warning

A Hungarian study of >114,000 out‑of‑hospital cardiac arrests (2018–2023) found that ambient temperature drops predict a near‑term rise in heart attacks: a 1.8°F fall associates with a 1.4% increase, and the effect shows a ~3‑day lag. The lag suggests stressors accumulate, creating a short window for targeted public‑health action. — If replicable elsewhere, short‑lag weather signals could be used to time emergency preparedness, outreach to vulnerable patients, and local health‑system surge planning as climate variability increases.