The Lancet - One Person Dies From Extreme Heat Every Minute; Heat Death Rate Up 23% Since 1990s [View all]

As world leaders prepare to meet for the 30th annual United Nations climate change conference, or COP30, in northern Brazil later this month, a new report has found that climate change is already killing millions of people every year. The “Countdown on Health and Climate Change,” which is compiled by researchers around the world, has been published every year since 2015 by the British medical journal The Lancet.

The missives have grown increasingly dire over that decade. In 2020, the report warned that climate change threatened to “undermine the past 50 years of gains in public health.” Five years later, the same document suggests that this erosion is well underway. “Climate change is increasingly destabilising the planetary systems and environmental conditions on which human life depends,” the countdown’s authors wrote.

Extreme heat now kills one person every minute, according to the report, noting that the rate of heat-related deaths has risen 23 percent since the 1990s — a trend the authors attribute in large part to planetary warming caused by the burning of fossil fuels. The vast majority of the heatwave days endured worldwide between 2020 and 2024 would not have occurred in the absence of climate change.

But it’s not just extreme heat: The risk of death due to inhaling dangerous particulate matter in wildfire smoke and the spread of infectious diseases such as mosquito-borne dengue fever are also on the rise. The number of deaths linked to wildfire smoke inhalation in 2024 was 36 percent higher than the baseline established from 2003 to 2012. More severe droughts and heatwaves spurred by rising temperatures were also connected to 124 million more cases of moderate or severe food insecurity in 2023, compared to a baseline average from 1981 to 2010.

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https://grist.org/health/lancet-2025-countdown-health-climate-change-report/