Science

Study shows 3 million heat deaths worldwide between 2016 and 2023

The Lancet Countdown report reveals that extreme heat killed 710 thousand people in 2023 alone and caused $1 trillion in productivity losses over the past three years.

By Redação ContextIA · Text produced with the help of artificial intelligence and under human editorial responsibility. How we work

Published October 28, 2026, 05:00 (Brasília time) · 2 min read

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The essentials of this story

What happened: Extreme heat caused 3 million deaths between 2016 and 2023 and generated an economic impact of $1 trillion per year in productivity.
Who is affected: Global population, especially in vulnerable regions like Southeast Asia and Africa, as well as governments and health systems.
What changes: Researchers are now demanding the declaration of a global health emergency for the climate and the creation of rapid response mechanisms.

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