Climate Change Devastating Global Health, Report Finds

Global heat-related deaths have risen by 23% since the 1990s, with 546,000 deaths occurring each year, while a record 154,000 deaths were attributed to air pollution from wildfire smoke in 2024 alone. The report highlights the surge in health harms due to climate change, with 2.5 million deaths annually linked to air pollution from burning fossil fuels. The report paints a grim picture, emphasizing the need to end fossil fuel addiction and adapt to the changing climate.

Key Takeaways:

• The rate of heat-related deaths has increased by 23% since the 1990s, with 546,000 deaths occurring annually.
• A record 154,000 deaths were attributed to air pollution from wildfire smoke in 2024 alone.
• 2.5 million deaths per year are attributable to air pollution from burning fossil fuels like gasoline and coal.
• The United States has backtracked on its climate commitments, contributing to the surge in heat-related deaths.
• Americans suffered an estimated 11,500 deaths from wildfire smoke, a 49% increase from the 2003-2012 average.
• About 123 million more people experienced moderate or severe food insecurity in 2023 compared to the annual global average between 1981 and 2010.
• The world's 100 largest oil and gas companies have increased their projected production as of March 2025.
• The top 40 lenders to the fossil fuel sector invested a five-year high of $611 billion in 2024, up 29% from 2023.

Statistics:

• 546,000 heat-related deaths occur annually worldwide.
• 154,000 deaths were attributed to air pollution from wildfire smoke in 2024.
• 2.5 million deaths per year are linked to air pollution from burning fossil fuels.
• 123 million people experienced moderate or severe food insecurity in 2023.
• 49% increase in deaths from wildfire smoke in the United States from 2003-2012 average to 2024.
• 28% increase in extreme droughts in the United States from 2020 to 2024 compared to the 1950s.
• $611 billion invested in the fossil fuel sector by the top 40 lenders in 2024.

Sources:

• The Lancet, news release, Oct. 28, 2025