The climate challenge is no longer just an upward slope on a chart, but a reality already touching our daily lives. The Europe 2026 report from the Lancet Countdown initiative, published on April 22, 2026, shows how climate disruption is now acting as a direct health threat to Europeans. Produced by 65 researchers from 46 academic and United Nations institutions, this work tracks 43 indicators and warns of a rapid worsening of health risks, while political action remains too timid.
Rising Threats
The findings laid out by scientists are particularly alarming. In 2024, heat is estimated to have caused about 62,000 deaths in Europe, and 99.6% of monitored regions recorded increases in heat-related deaths. At the same time, health alerts linked to extreme heat events jumped by 318% between 2015-2024 and the 1991-2000 period. Heat is therefore no longer a one-off or distant risk: it has become a structural health burden, hitting first infants, the elderly, people with chronic illnesses, and outdoor workers exposed to the elements.
Beyond direct heat, Europe faces a growing infectious disease threat. Warming favors the establishment of vectors like the tiger mosquito and increases conditions conducive to the transmission of diseases such as dengue, chikungunya, or Zika. The report estimates that the average risk of dengue outbreaks rose by 297% in Europe during 2015-2024 compared with the reference period 1981-2010. At the same time, rising temperatures also alter exposure to marine bacteria: the share of coastlines conducive to Vibrio infections rose by 32% in France and Italy over the same recent decade compared with 1980-2010.
The climate destabilization also acts more subtly, yet just as concretely, on daily life. The report notes that the pollen season now lasts one to two weeks longer than in the 1990s, extending exposure for people with allergies. In parallel, droughts and heatwaves worsen food insecurity. In 2023, more than one million additional people were affected by food insecurity linked to these extreme phenomena compared with previous decades.
Deepening Inequalities
The report also emphasizes the widening social gaps in the face of the climate crisis. Low-income households are the most vulnerable: they have a 10% higher likelihood of facing climate-related food insecurity. Economically deprived regions also bear more wildfire risks and have limited access to green spaces, which are essential for mitigating heat and protecting mental and physical health. Climate change thus creates not only new dangers but also reinforces existing inequalities.
A Fossil Fuel Dependence That Worsens the Crisis
The researchers clearly point to the persistent responsibility of fossil fuels in this health deterioration. Despite European commitments to decarbonization, public subsidies to fossil fuels reached €444 billion in 2023, largely to cushion energy price spikes after Russia’s invasion of Ukraine. This massive support temporarily protected households, but it also prolonged an energy dependence that fuels air pollution, economic vulnerability, and health risks.
The report notes that this dependence remains deeply rooted in transportation, heating, and more broadly in the continent’s energy system. As a result, Europeans continue to bear the effects of a model that exposes them to price shocks and to harmful air pollution. The authors therefore call for putting health at the heart of energy and climate decisions, rather than treating these issues as separate dossiers.
Reasons for Hope, Despite the Urgency
Despite this bleak picture, scientists also highlight several encouraging trends. Europe’s retreat from coal and the rising role of renewables show that another path is possible. In 2024, investment in clean energy surpassed that for fossil fuels by 461%, with €427 billion compared to €76 billion. This transition is already starting to yield measurable health benefits.
In the European Union, deaths attributed to air pollution from electricity production have fallen by 84% since 2000, and those linked to transportation by 58%. In other words, the energy transition is not just about cutting greenhouse gas emissions: it is saving lives, here and now. The report thus reiterates that climate action can be one of the century’s greatest public health opportunities, provided we accelerate it.
The final message of this third edition is clear: the margin for maneuver is shrinking. Without a faster exit from fossil fuel dependence, without cities better adapted to heat, without more prepared health systems, and without stronger protections for vulnerable populations, the human cost of climate disruption will continue to rise. In Europe, the climate crisis is no longer an abstract threat. It has already become a public health issue.
