The study also found that the risk of dying from a heart attack was roughly doubled on days that had both extreme heat and heavy fine air pollution.
The research was led by scientists at the Sun Yat-sen University in Guangzhou, China. The team analyzed recent data collected on recorded heart attack deaths from the Jiangsu province of the country, between 2015 to 2020. Then they cross-referenced that information with environmental data in the area, focusing on especially hot and cold days as well as levels of fine particulate matter .During the study period, there were about 200,000 fatal heart attacks recorded in the area.
Heat waves appeared to pose a greater threat in general than cold snaps. Depending on the temperature and duration of extreme heat, for instance, the associated increased risk of death ranged from 18% to 74%, while the increased risk of cold days ranged from 4% to 12%. The highest associated risk was seen on days of extreme heatroughly twice as likely to occur on these days than usual. Women and older adults also seemed to be more vulnerable than others.
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