Health risks from climate change spur stronger public support for action, research finds

Informing people about the health risks linked to climate change is twice as likely to spur public support for government-led climate action than messages focused on economic or environmental impacts, an international study has found. Based on a survey of around 30,000 respondents in Brazil, India, Japan and South Africa carried out in late 2025, the report published this month by the Climate Opinion Research Exchange (CORE) and the Wellcome Trust reveals strong public support for climate action. Over 80% of respondents said they are concerned about the impacts from climate change, the survey shows. A majority also back government measures to prevent public health impacts associated with the climate crisis. “Humanitarian emergencies” are already increasing around the world due to human-caused rising temperatures, according to the World Health Organization (WHO). More than a third of the global population is exposed to climate threats like wildfires, extreme heatwaves, and tropical storms and floods, it says. These threats are amplified by human-caused greenhouse gas emissions. Dustin Gilbreath, a researcher at CORE and one of the study’s lead authors, said that communicating these risks to the general public can be an effective way to inspire climate action, given that health is a basic concern for everyone across the political spectrum. “If you suddenly find out that climate change is hurting your health and your children’s health, more people are rightfully more open to that argument,” he said. “At the end of the day, we all care about our health, regardless of our political inclinations.” At COP28 in Dubai, more than 150 countries issued a declaration “expressing grave concern” over climate-fuelled health impacts, and pledged to strengthen policies that can cut carbon emissions and benefit people’s health in the process – for example by reducing air pollution from cars or factories. More than