Heat spikes raise emergency room visits for gunshots, kidney, skin and mental health issues, study finds

A comprehensive analysis of Chicago hospital and urgent‑care records has revealed a clear correlation between rising temperatures and heightened activity in emergency departments. The study, which examined millions of patient visits over several years, found that hotter days are associated with a measurable uptick in a range of health complaints, prompting concerns among public‑health officials about the broader impacts of heat on urban populations.

Specifically, the data showed increases in accidental gunshot wounds, kidney‑related issues, dermatological problems, and varicose vein complaints during periods of elevated heat. The research also identified a rise in mental‑health presentations linked to marijuana use when temperatures climbed. These findings suggest that extreme heat not only strains medical facilities through higher overall visit volumes but also influences the types of conditions for which residents seek urgent care.