Climate Inaction Is Killing Millions: The 2025 Lancet Countdown Report
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Introduction
A new global health review shows that climate change is no longer a future-threat—it is costing lives now. According to the latest data from the Lancet Countdown collaboration, heat-related mortality, labour losses, and food insecurity tied to climate extremes have reached record highs. Governments and industries continue to invest in fossil fuels even as the health impacts accumulate.
Key Findings
Heat-related deaths globally have increased by ~23 % since the 1990s, averaging around 546,000 deaths per year now.
The Guardian
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In 2024, people experienced an average of 16 extra “dangerous heat” days compared to the baseline, with infants and seniors getting over 20 extra days.
TIME
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About 640 billion labour hours were lost in 2024 due to heat exposure, translating into productivity losses of approximately US $1.09 trillion globally.
The Guardian
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Droughts, wildfires, and extreme weather pushed around 124 million more people into moderate-to-severe food insecurity in 2023.
The Guardian
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Health-sector emissions dropped ~16% in one year, but adaptation efforts are grossly insufficient.
TIME
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What the Report Urges
- Phase out fossil-fuel use quickly: The report identifies this as the single most powerful health intervention. Lancet Countdown+1
- Strengthen health systems for climate risk: Ongoing investment required in adaptation and resilience. World Health Organization
- Promote climate-friendly diets & agriculture: Good for health, good for the planet.
- Redirect financing away from fossil-fuel sectors and into health-climate solutions.