A study published in Nature Communications warns of the increasing risk of heat-related deaths due to climate change. The research assesses the correlation between extreme heat and mortality in over 700 cities and smaller areas globally. Its findings indicate that lethal consequences of extreme heat could become normal if urgent measures are not taken.
The study also details how the impact varies by region. Results show that the most extreme 1% of temperatures for each location correlates with a significant increase in temperature-related deaths. Metropolitan areas that implement strong responses, like air conditioning and shared cooling centers, could avoid the worst effects of extreme heat.
Extreme heatwaves are becoming more frequent and deadly. Around half of the world’s population has experienced record temperatures within the past decade. They can lead to an increase in heat-related deaths, caused directly by heat or by exacerbating other health conditions. Over 61,000 people died due to extreme heat across Europe in the summer of 2022 and a third of all heat-related deaths recorded from 1991-2018 were associated with climate change.
Poorest populations are deemed most vulnerable to these changes, due to low adaptability and less access to mitigation measures. Countries without adequate preparation measures will likely face the highest risks. Going forward, experts urge the importance of strong adaptation and mitigation resources to reduce the impact on human lives.
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Risk of heat-related deaths has ‘increased rapidly’ over past 20 years
