A hidden summer threat could soon send twice as many Americans to the hospital

A new climate study published on Tuesday projects that by 2040, urban heat and rising temperatures in the U.S. could double the number of hospitalizations due to heat-related illnesses. Researchers utilized advanced modeling to forecast that heat-related illnesses could lead to 217,000 hospitalizations annually in a low-emissions scenario and up to 237,000 if emissions continue to rise significantly. The study, authored by Portland State University Professor Vivek Shandas and Stephan Brown of CAPA Strategies, highlights that these life-threatening risks will not impact all Americans equally. The researchers analyzed 53 major U.S. metropolitan areas, dividing them into nine geographic regions to assess the varied impacts of extreme heat on different populations. These regions include the Northeast, Northern Rockies and Plains, Northwest, Ohio Valley, South, Southeast, Southwest, Upper Midwest, and West. The study acknowledges that the interplay between rising temperatures, particularly in urban environments that amplify heat, and factors like demographics, health status, and access to cooling options, requires further understanding to effectively mitigate the dangers of heat-related illnesses. The authors emphasize that despite growing awareness of heat's health impacts, detailed knowledge of these interactions remains limited.