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Day: 25 July 2023

Heat Waves and cold snaps linked to increased number of fatal heart attacks

Ed Cara, Gizmodo »

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 heat and heavy fine pollution, with heart attack deaths being roughly twice as likely to occur on these days than usual. Women and older adults also seemed to be more vulnerable than others. The team’s findings were published Monday in the journal Circulation.

These results can only show a correlation between extreme weather and heart attack deaths, not a clear cause-and-effect relationship. But this is only the latest research to suggest that very hot and cold days can be harmful to people’s health and hearts. Other studies have found that heart attacks in general become more common during extreme weather events. That said, there’s been less research looking at the impact of extreme weather on the risk of dying from a heart attack, according to the authors. This current study also suggests that extreme heat and pollution can have a synergistic effect on heart attack mortality.

This month’s heat is likely the hottest Earth has been in about 120,000 years, easily the hottest of human civilization [Updated]

New scientific report identifies "the fingerprints of climate change"

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Euronews »

The new study by World Weather Attribution – a research group comprised of international climatologists – has found that the deadly hot spells in the American Southwest and Southern Europe could not have happened without the continuing build up of warming gases in the air.

These unusually strong heat waves are becoming more common, Tuesday’s study said. The same research found the increase in heat-trapping gases, largely from the burning of coal, oil and natural gas has made another heat wave — the one in China — 50 times more likely with the potential to occur every five years or so.

A stagnant atmosphere, warmed by carbon dioxide and other gases, also made the European heat wave 2.5 degrees Celsius hotter, the one in the United States and Mexico 2 degrees Celsius warmer and the one in China one 1 degree Celsius hotter, the study found.

Study finds human-caused climate change a definitive factor in brutal heat waves

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