Global warming is not just an environmental crisis—it’s becoming a significant burden on healthcare systems. A recent Canadian study reveals that extreme heat and air pollution are driving a rise in emergency medical imaging, including X-rays and CT scans, by approximately 5%. While this may seem modest on a daily basis, the cumulative impact on healthcare costs and resources is substantial over time.

The study, led by Dr. Kate Hanneman, an associate professor at the University of Toronto's Department of Medical Imaging, highlights how climate change indirectly contributes to escalating healthcare needs. Published in the journal Radiology on November 19, the research sheds light on the ripple effects of rising temperatures on public health.

Over a decade-long period from 2013 to 2022, the research team analyzed imaging data from four major Toronto hospitals, tracking nearly 1.7 million scans. On an average day, hospitals performed 428 scans, with emergency departments handling around 659 patients. However, during peak heat and high pollution days, the demand for X-rays surged by 5.1%, and CT scans by 4%. Interestingly, no similar increase was observed in the use of ultrasounds or MRIs.

Despite an overall improvement in air quality during the study period, the findings underscore the combined impact of extreme heat and particulate pollution in triggering health emergencies. These conditions often result in increased visits to emergency departments, where diagnostic imaging is essential for assessing a range of heat-related and respiratory conditions.

Dr. Hanneman pointed out that as global temperatures continue to climb, heat waves and extreme weather events are expected to grow in frequency and severity. This trend will likely place additional strain on emergency departments, emphasizing the need for proactive planning in healthcare systems to address the rising demand for imaging services.

This research not only underscores the health implications of climate change but also highlights the broader economic and logistical challenges posed by global warming. Addressing these issues will require coordinated efforts to mitigate climate change and adapt healthcare infrastructure to meet the evolving needs of patients in an increasingly warming world.