The World Health Organization should formally declare the climate crisis a global public health emergency, according to an independent expert commission convened by WHO. The recommendation comes as evidence mounts that current frameworks are inadequate to address what the commission calls a “catastrophic threat” to human health.
Climate health impact timeline
WHO projected additional annual deaths from climate change, by decade
2030-2050
impacts
mortality
0100k200k300k2020203020402050
Source: WHO Global Health Observatory, 2024 | Georgian Medical Journal News
Commission calls for highest alert level
The pan-European commission on climate and health recommended that WHO declare a public health emergency of international concern (PHEIC)—the organization’s highest level of alert. This designation would formally recognize climate change as an acute, escalating threat rather than a chronic background condition.
According to the commission’s findings published in The BMJ, current rules and frameworks governing climate-related health harms “have not kept pace with the scale of the crisis.” The absence of formal emergency designation has allowed governments to treat climate change as a less urgent priority, the experts argued.
Mounting health threats across multiple pathways
WHO’s 2024 climate and health factsheet projects that between 2030 and 2050, climate change will cause approximately 250,000 additional deaths annually from undernutrition, malaria, diarrhea, and heat stress alone. These figures represent only direct pathways and likely underestimate the full health burden.
The commission emphasized that climate impacts are already evident and accelerating. Extreme weather events, shifting disease patterns, food insecurity, and heat-related mortality are occurring with increasing frequency and severity across multiple regions, according to recent WHO surveillance reports.
For more analysis on global health emergencies and their management, WHO’s emergency frameworks have evolved significantly since the COVID-19 pandemic response.
The absence of a formal emergency designation has allowed governments to treat climate change as a chronic background condition rather than an acute, escalating threat that is already evident.
— Pan-European Commission on Climate and Health (The BMJ, 2024)
Key takeaways
- WHO estimates 250,000 additional annual deaths from climate change by 2030-2050
- Expert commission calls for formal public health emergency declaration
- Current frameworks inadequate for addressing escalating climate health threats
Frequently asked questions
What would a WHO public health emergency declaration mean?
A PHEIC designation would require countries to coordinate international responses and allocate emergency resources. It represents WHO’s highest alert level, previously used for COVID-19, Ebola, and mpox outbreaks.
How many people are already affected by climate health impacts?
WHO estimates that climate change already affects billions of people through air pollution, extreme weather, and shifting disease patterns. The 250,000 annual death projection represents only direct pathways from four specific conditions.
What health conditions are most linked to climate change?
Key climate-sensitive health outcomes include heat-related illness, vector-borne diseases like malaria, waterborne diseases, malnutrition from crop failures, and respiratory conditions from air pollution and wildfires.
The commission’s recommendation represents a potential turning point in how the global health community frames climate action. Whether WHO will act on the call for emergency designation remains to be seen, but the expert consensus signals growing urgency around treating climate change as an immediate health crisis requiring emergency-level response.
Source: WHO should declare climate crisis a global public health emergency, experts say
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