Impacts of Federal Actions on Extreme Heat and Health July 17, 2025 Issue Brief Between 1999 and 2023, the number of heat-related deaths in the U.S. increased by 117%. KFF analysis of data from the Centers for Disease Control and Prevention shows that American Indian or Alaska Native and Black people are at higher risk of experiencing a heat-related death compared to their White counterparts. Estimates suggest that heat events in the U.S result in approximately $1 billion in excess health care costs each year. If left unaddressed, climate change could cost the U.S. economy approximately $14.5 trillion over the next fifty years.
