The record-breaking heatwave last summer in England led to a staggering 638 excess deaths, according to official statistics. The figure is a stark reminder of the devastating consequences of extreme temperatures and climate change on human life. The soaring mercury, which hit 40C (104F) for the first time on record, caused a sudden spike in mortality rates, with an additional 496 deaths recorded on the following day.
Experts had predicted a higher number of fatalities, with the environment and health modelling lab at the London School of Tropical Hygiene and Medicine estimating the excess death toll would reach 966 over a four-day period. However, the actual number of deaths far surpassed these expectations, highlighting the unprecedented severity of the heatwave.
Doctors warned that the prolonged heatwave, which saw temperatures barely dip below 27C at night, posed a significant risk to vulnerable groups, including infants, the elderly, the homeless, outdoor workers, and those with pre-existing medical conditions. Dehydration, heat exhaustion, and heatstroke were major concerns, particularly for those aged 85 and over.
The UK Health and Security Agency had previously estimated that a later prolonged heatwave from August 8 to 17 saw an estimated 1,458 excess deaths, excluding Covid-19, in those over 65. Age UK has urged that the figures serve as a wake-up call, emphasizing the need for adaptations to mitigate the impact of extreme weather events on public health.
The government responded by declaring a level 4 heat alert, warning that “illness and death may occur among the fit and healthy, and not just in high-risk groups.” Hundreds of firefighters battled blazes across England, with temperatures reaching a record high of 40.3C at RAF Coningsby in Lincolnshire.
Prof Sir David Spiegelhalter, chair of the Winton centre for risk and evidence communication at the University of Cambridge, described the excess deaths as “absolutely huge” and “extraordinary data.” He emphasized the sudden and severe nature of the heatwave’s impact, noting that deaths due to cold tend to be more diffuse over time.
The incident serves as a stark reminder of the human cost of climate change and the need for urgent action to reduce carbon emissions and adapt to the changing climate. As temperatures continue to rise, experts and policymakers must work together to mitigate the devastating effects of extreme weather events on public health.