New Reviews Confirm: Older Adults Face Outsized Risks from Climate Change
Two major scientific reviews paint a clear picture — and point toward solutions.
Key Points
Older adults account for the vast majority of deaths during extreme heat events.
Climate change threatens older adults through multiple pathways, from heat and air pollution to flooding, infectious disease, and mental health.
Vulnerability is shaped not just by age, but by income, housing, race, and social connection.
By
CIRCA Staff
March 3, 2026
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If you've been paying attention to the news about climate change, you know that rising temperatures and extreme weather are affecting communities everywhere. But two major scientific reviews published recently make clear what clinicians have suspected for some time: when it comes to climate change, older adults bear a disproportionate share of the burden.
The first review, published in the Journal of Global Health, assessed evidence on how a wide range of climate hazards affect older people's health and their ability to age well. These hazards include extreme heat and wildfires, as well as drought, flooding, and infectious disease. The second review, published in Advances in Human Biology, took a broader look at the physical health, mental health, and social impacts of climate.
How the Studies Were Done
Both reviews are what scientists call "scoping reviews," a rigorous method for surveying the full landscape of research on a topic. Rather than looking at a single study, scoping reviews systematically search multiple scientific databases, screen thousands of articles, and synthesize findings across many studies conducted in different countries and settings. The Journal of Global Health review screened more than 2,500 articles before selecting those most relevant to older adults and climate change. The Advances in Human Biology review followed a similar process, ultimately drawing on 48 carefully selected studies. This kind of comprehensive, systematic approach gives researchers and readers greater confidence that the conclusions reflect the full weight of available evidence, rather than the findings of any single study.
Together, they send an unmistakable and urgent message:
Heat Is the Biggest Threat, But Not the Only One
https://climateaging.bctr.cornell.edu/posts/new-reviews-confirm-older-adults-face-outsized-risks-from-climate-change