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Extreme temperatures are tied to more than half a million stroke deaths a year. With climate change, expect more

·1 min

In 2019, a study found that over half a million deaths were attributed to stroke caused by extreme temperatures, with expectations of a further rise due to global warming. The study analyzed stroke cases related to high and low temperatures across 204 countries and territories since 1990. Men experienced more stroke incidents due to extreme temperatures than women, affecting all age groups. The study emphasized the impact of nonoptimal temperatures and the increasing burden of stroke deaths connected to extreme temperatures in regions with high poverty levels and fragile healthcare systems. The study projected a sharp increase in stroke burdens as temperatures continue to rise. Stroke is already a significant cause of death and disability globally. The study did not provide specific reasons for the correlation between extreme temperatures and strokes, but other research has highlighted factors such as difficulties in regulating body temperature and increased blood clotting risk in hot weather, as well as vasoconstriction and blood pressure spikes in extremely cold temperatures. Experts urge global action to address the impact of climate change on stroke and other health issues.