Declare climate crisis a global public health emergency, experts tell WHO | Climate crisis

The Shift from Environmentalism to Survival: Why Climate Change is Now a Health Crisis

For decades, we have framed the climate crisis as a battle for the planet—saving glaciers, protecting polar bears, and reducing carbon footprints. But the conversation is shifting. We are no longer just talking about “the environment”. we are talking about human survival.

Leading international experts and a pan-European commission convened by the World Health Organization (WHO) are now calling for the climate crisis to be declared a Public Health Emergency of International Concern (PHEIC). This isn’t just a semantic change. A PHEIC is the highest level of health alert the WHO can issue, previously reserved for global threats like Covid-19 and Mpox.

The Invisible Killers: Vector-Borne Diseases and Air Quality

The most immediate trend we are seeing is the “migration” of disease. As global temperatures rise, the geographical range of vector-borne diseases is expanding. We are seeing an international spread of illnesses like dengue and chikungunya into regions that were previously too cold for the mosquitoes that carry them.

But the threat isn’t just biological. Air pollution, exacerbated by wildfires and industrial emissions, is creating a chronic health burden. From “smoke seasons” in North America to smog in European cities, the respiratory impact is staggering. When air quality drops, hospital admissions for asthma and cardiovascular distress spike, straining already fragile healthcare systems.

The Mental Health Toll: “Climate Anxiety” is Real

While physical ailments are easier to quantify, the psychological impact of a warming world is a growing epidemic. Experts now recognize climate change as a primary driver of anxiety, stress, and depression, particularly among youth.

The feeling of “solastalgia”—the distress caused by environmental change in one’s home environment—is becoming a standard clinical observation. Moving forward, mental health support will need to be integrated into climate adaptation strategies.

The Financial Paradox: Subsidizing Sickness

One of the most jarring revelations in recent health reports is the contradiction in government spending. In Europe alone, approximately €444bn (£387bn) is spent annually on subsidies for oil and gas production.

Here is the paradox: governments are funding the extremely industries responsible for premature deaths. It is estimated that fossil fuel combustion causes 600,000 premature deaths per year in Europe. In some nations, fossil fuel subsidies actually exceed the entire national health budget.

Future-Proofing Healthcare: The Resilience Gap

Our healthcare infrastructure was designed for a climate that no longer exists. Many hospitals are built on floodplains or in buildings that cannot handle extreme heatwaves, leading to operational failures during the very moments they are needed most.

the healthcare sector itself is part of the problem, accounting for roughly 5% of global emissions. The trend for the next decade will be “Green Healthcare”—a movement to decarbonize hospitals while simultaneously making them resilient to climate shocks.

Key Trends in Healthcare Adaptation:

• Climate-Ready Infrastructure: Moving facilities away from flood-prone areas and installing passive cooling systems.
• Predictive Health Modeling: Using AI to predict disease outbreaks based on temperature and rainfall patterns.
• Decarbonized Supply Chains: Reducing the carbon footprint of medical waste and pharmaceutical transport.

The Path Forward: Making Climate Change Personal

To combat disinformation and skepticism, experts suggest a simple strategy: make it personal. Climate change is not a distant threat; it is the air currently filling our lungs and the heat affecting our sleep.

By aligning the health argument with the climate argument, the movement gains a powerful new momentum. Clean air, sustainable food systems, and active travel (like walking and cycling) aren’t just “green” policies—they are prescriptions for a healthier, longer life.