Cold weather is responsible for an estimated 42,735 heart disease deaths per year in the United States, according to a new study covering two decades of mortality data. The research, published in the American Journal of Preventive Cardiology, found that heat was linked to roughly 2,242 cardiovascular deaths annually. This 19-to-1 ratio emerged from an analysis of Centers for Disease Control and Prevention (CDC) death records covering more than 14 million cardiovascular fatalities across 819 U.S. counties from 2000 to 2020. The study’s authors noted that official death certificates typically list cardiac causes without noting temperature as a contributing factor,…

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