Pollen season in UK and mainland Europe extended by climate breakdown

Lead

As Europe grapples with the health consequences of a warming planet, a new report from the Lancet Countdown Europe has found that the pollen season in the UK and mainland Europe has extended by one to two weeks since the 1990s. The same report, compiled by 65 researchers from 46 academic and United Nations institutions, also documents a significant rise in heat-related deaths across the continent, along with an increased risk of mosquito-borne diseases and food insecurity.

Coverage Comparison

The findings were reported by The Guardian and RFI, with both outlets drawing on the same Lancet Countdown Europe report. The Guardian's coverage focused on the extension of the pollen season and its implications for the tens of millions of people suffering from hay fever, while also including data on heat-related deaths and fossil fuel subsidies. RFI's reporting emphasized the headline figure that heat killed 62,000 people across Europe in 2024. Both outlets highlighted the warning from eco-epidemiologist Joacim Rocklöv, co-director of Lancet Countdown Europe, that the window for meaningful action is "narrowing." The Guardian described the health impacts as a "huge" increase in suffering, while RFI's tone was more urgent, noting that climate change is "compounding" health threats.

Key Claims

According to the Lancet Countdown Europe report, as covered by The Guardian, the pollen seasons for birch, alder, and olive trees began between one and two weeks earlier in 2015–24 compared to 1991–2000. The seasonal severity of birch has increased by 14–20% since the last report in 2024, particularly in southern UK, northern France, Germany, and eastern Europe. Separately, the report found that heat-related deaths increased by an average of 52 per million inhabitants per year across 820 of 823 monitored European regions between 2015 and 2024, compared to the 1991–2000 baseline. RFI reported that daily extreme heat warnings rose by 318% over the same period. The report also noted an almost quadrupling of the risk of dengue outbreaks in Europe over the past decade, with increasing cases of West Nile, Chikungunya, and Zika viruses. Additionally, more than 1 million additional people in Europe experienced moderate or severe food insecurity in 2023 compared to the 1981–2010 baseline.

Perspectives

The report's authors emphasize that these health impacts are a direct result of climate change, driven by warm weather and high carbon dioxide concentrations that increase pollen production. Katharina Bastl, a pollen researcher at the Medical University of Vienna not involved in the study, noted that "global warming has already had an impact on pollination," though she cautioned that the effects vary regionally. The most affected areas for heat-related deaths are the Balkans, Italy, Spain, and Mediterranean France, with infants and the elderly being particularly vulnerable. Both The Guardian and RFI present the report's findings as evidence of the urgent need for action, with RFI quoting Rocklöv: "Across Europe, the health impacts of climate change are intensifying faster than our response is keeping up."

The Guardian also pointed out that annual fossil fuel subsidies rose to €444bn in 2023, a new high compared to 2010, suggesting a disconnect between policy and the health risks identified. While the report was published in the Lancet medical journal, the data on pollen season extension and birch severity increase appear to be derived from a single study, as reported only by The Guardian. Other figures, such as heat-related deaths and disease risks, were corroborated by both sources.