The 2026 Europe report of the Lancet Countdown on health and climate change: narrowing window for decisive health action
The Lancet Public Health
The 2026 Europe Report of the Lancet Countdown on Health and Climate Change
Cairo at sunset — the Nile from above Cairo · Egypt
The Problem
In 1990, the first IPCC report warned that average global temperatures could rise by 2°C above pre-industrial levels by 2025 if no action was taken. Thirty-five years later, the Paris Agreement target of 1·5°C has a 70% likelihood of being exceeded based on temperatures averaged across 2025–29. Current mitigation policies, if fully implemented, are estimated to limit global warming to 3·1°C by century’s end — far above the threshold beyond which climate-related health risks rise non-linearly. Europe, the fastest-warming continent, is on the front line of that gap between target and trajectory.
The Approach
This third iteration of the Lancet Countdown in Europe brings together 65 researchers from 46 academic and UN institutions to track health-relevant climate indicators across the continent. The 2026 report covers 43 indicators across five domains: climate change impacts and vulnerabilities; adaptation, planning, and resilience for health; mitigation actions and health co-benefits; economics and financing; and public and political engagement. Seven indicators are new to this report; three were retired. Where possible, indicators are compared against a unified 1981–2010 baseline, aligning with WMO standards.
Coverage is constrained by data availability: the report was designed for the 53 WHO Europe countries plus Liechtenstein and Kosovo, but most indicators are computed for the 38 EEA / EU-27 nations with consistent data infrastructure.
What We Found
Heat exposure is rising sharply. Almost all monitored European regions (823 of 99·6%) recorded more heat-attributable deaths in 2015–24 than in 1991–2000. Daily public-health warnings of extreme heat increased 318%, and the average annual hours when heat made even light or moderate physical activity unsafe rose by 88%.
Climate-sensitive infectious diseases are spreading. The annual transmission suitability for dengue rose by 297% in 2015–24 — a shift that helped drive 2024’s record outbreaks of Aedes-borne arboviruses across southern and central Europe. Climatic suitability for other vector-borne diseases (West Nile virus, Vibrio, leishmaniasis, ticks) is tracked through a now-expanded set of indicators.
Allergies, drought, and food insecurity. Climate change has prolonged the European pollen season by 1–2 weeks. In 2023, more than one million additional people were affected by moderate or severe food insecurity compared with the 1981–2010 average, driven by combined heatwave and drought exposure. Low-income households were 10·9 percentage points more likely to experience food insecurity than middle-income households — climate inequity made empirical.
Labour productivity is being eroded. Higher mean temperatures cut labour supply by ~24 hours per worker per year across Europe in 2000–23 compared with 1965–94. Outdoor workers in construction and agriculture face the highest heat-injury risk.
The Geography of Risk
European maps from Indicators 1.1.3 (heat-related mortality) and 1.2.1 (drought, SPEI6). The top panel maps the increase in annual heat-attributable mortality between 1991–2000 and 2015–24 — additional deaths per million inhabitants per region (deepest red ≥120). The bottom panel maps the change in the number of months per year of extreme-to-exceptional drought (SPEI6 ≤ −1·6) over the same period.
The signal is near-universal: 99·6% of monitored European regions (823 regions) recorded more heat-attributable deaths in 2015–24 than two decades earlier, averaging 52 excess deaths per million inhabitants per year (95% CI 43–59). But the burden is not spread evenly, and that is what the maps are for — they make the north–south gradient legible at a glance. Both hazards intensify moving south, and across the Mediterranean they begin to overlap.
Southern Europe carries the heaviest combined burden. The regions shaded deepest red for heat-attributable mortality are largely the same ones accumulating the most months of severe drought — layering acute heat risk on top of chronic water stress, agricultural strain, and the food-insecurity and labour-productivity losses tracked elsewhere in the report. Read together, the two panels turn an abstract continental average into a targeting map: the places that most need heat–health early-warning systems and drought resilience are identifiable, and they cluster.
Indicators 1.1.3 & 1.2.1 · The Lancet Public Health
Mitigation: Slow Progress, Fast Trade-offs
The energy transition in Europe is partly underway — and partly stalled. Renewable energy rose to 21·5% of total electricity supply in 2023, up from 8·4% in 2016. Coal use fell again in 2023. Clean energy investment hit €427 billion in 2024 — 86% higher than 2015, while fossil fuel investment fell to €76 billion (32% lower). The European Green Deal is, by these measures, beginning to deliver.
But the same year, fossil fuel subsidies reached a new high of €444 billion, four times their 2010 level — driven largely by government responses to energy-price shocks following Russia’s invasion of Ukraine. And the largest renewable contributor — solid biomass — now accounts for 31% of total renewable consumption. Air-pollution-attributable deaths from residential biomass burning rose by 4% between 2000 and 2022, and biomass-related residential heating contributes to net tree cover loss, which increased by 80% between 2014–23 vs 2001–10. Health-care sector air pollution attributable mortality is 24% higher than 2010 despite slight declines in sectoral greenhouse gas emissions.
The pattern is consistent: aggregate progress, with health-relevant trade-offs hidden inside the headline numbers.
Engagement is Going the Wrong Way
While the scientific literature on the climate–health nexus continues to grow, individual, political, corporate, and media engagement with the issue declined in 2023 compared with previous years (indicators 5.2.1, 5.3, 5.5). One bright spot: climate litigation has emerged as a powerful platform for elevating health arguments. In 2025, the International Court of Justice determined that states have a binding legal obligation to act against climate change, recognizing its effects on human and planetary health (indicator 5.6).
Why It Matters
Europe is leading the global transition toward a healthier, lower-carbon future — and is still falling short of what its own targets require. The 2026 report’s central finding is that the current health risks of climate change in Europe are no longer projected; they are measured. Heat-attributable deaths, vector-borne disease ranges, food insecurity, and labour productivity losses are all observed, quantified, and rising. Adaptation is necessary but cannot substitute for mitigation — and mitigation must accelerate, with explicit attention to distributional health consequences (low-income households, outdoor workers, older adults) and to trade-offs hidden inside the energy transition (biomass air pollution, healthcare emissions, fossil fuel subsidies). The window for decisive health action is narrowing. The empirical case for closing it has never been stronger.
Citation
Kriit, H.K., Chen-Xu, J.C., Semenza, J.C., Heiliger, H., Markandya, A., Dasandi, N., Jankin, S., van Daalen, K.R., Achebak, H., Alari, A., Alcayna, T., Ball, E., Ballester, J., Bechara, H., Callaghan, M.W., van Cauwenberghe, M., Charnley, G.E.C., Courtenay, O., Cirach, M., Garcia-Corral, P., Cross, T.J., Dasgupta, S., Dickson, Z.P., Eckelman, M.J., Erfort, C., Fransson, P., Farooq, Z., Gasparyan, O., Hamilton, I., Hesselman, M., Hänninen, R., Hsu, S.-C., Janoš, T., Jatkar, H., Jay, O., Kennard, H., Khanna, K., Kiesewetter, G., Lowe, R., Lührsen, D., Maia, C., Martinez-Urtaza, J., Minx, J.C., Nieuwenhuijsen, M., Palamarchuk, J., San José Plana, A., Repke, T., Roa-Contreras, J.A., Robinson, E.J.Z., Scamman, D., Shartova, N., Sherman, J.D., Sirotkina, E., Singh, P., Sofiev, M., Springmann, M., Stucki, L., Tartarini, F., Triñanes, J., Walawender, M., Romanello, M., Antó, J.M., Nilsson, M., Tonne, C., & Rocklöv, J. (2026). The 2026 Europe report of the Lancet Countdown on health and climate change: narrowing window for decisive health action. The Lancet Public Health. DOI: 10.1016/S2468-2667(26)00025-3
Citation
@article{h.k.2026,
author = {H.K. , Kriit and J.C. , Chen-Xu and J.C. , Semenza and , ...
and J.A. , Roa-Contreras and C. , Tonne and J. , Rocklöv},
title = {The 2026 {Europe} Report of the {Lancet} {Countdown} on
Health and Climate Change: Narrowing Window for Decisive Health
Action},
journal = {The Lancet Public Health},
date = {2026-04-21},
url = {https://jorgeroac.com/publications/papers/peer-reviewed/lancet-countdown-2026-europe/},
doi = {10.1016/S2468-2667(26)00025-3},
langid = {en}
}