Heat waves can be deadly for older adults: An aging global population and rising temperatures mean millions are at risk

Older adults face health risks from high heat for many reasons, including medications. AP Photo/Manu Fernandez by Deborah Carr, Boston University; Enrica De Cian, Ca’ Foscari University of Venice; Giacomo Falchetta, Ca’ Foscari University of Venice, and Ian Sue Wing, Boston University A deadly heat wave gripped large regions of Asia for weeks in April and May 2024. As temperatures climbed past 110 degrees Fahrenheit (43.3 Celsius) in India on May 7, campaigning politicians, local news announcers and voters waiting in long lines passed out from the oppressive heat. From as far north as Japan to as far south as the Philippines, the relentless heat wreaked havoc on everyday life. Students and teachers in Cambodia were sent home from school, as their hand-held fans provided little protection against the stifling heat and humidity in their poorly ventilated classrooms. Farmers in Thailand saw their crops wither and mourned the loss of livestock that perished under the punishing sun. Hundreds of people died from the heat. Most of the planet has suffered the dire effects of extreme heat in recent years. A weekslong heat wave in the southwestern United States in 2023 was described as “hell on earth” in Phoenix, where temperatures...