# Global Warming and the Elderly: A Socio-Ecological Framework

## TL;DR

This paper explores how global warming and aging populations are increasing heat-related health risks for the elderly, proposing a framework to mitigate these dangers.

## Contribution

The paper introduces a socio-ecological framework to address heat-related illness in the elderly, integrating climate, policy, and social determinants.

## Key findings

- Heat-related mortality among adults over 60 has increased by 167% since the 1990s.
- Global warming is accelerating at three times the pre-industrial rate.
- Older adults are particularly vulnerable due to metabolic and cognitive changes.

## Abstract

Public health relevance—How does this work relate to a public health issue?
Two global trends, including the aging of populations worldwide and the acceleration of climate change with increasingly frequent extreme weather events, may contribute to a healthcare crisis toward the end of the current century.Heat-related mortality among adults ages 60 and above has increased by 167% since the 1990s, with global warming now occurring at three times the rate of the pre-industrial era.

Two global trends, including the aging of populations worldwide and the acceleration of climate change with increasingly frequent extreme weather events, may contribute to a healthcare crisis toward the end of the current century.

Heat-related mortality among adults ages 60 and above has increased by 167% since the 1990s, with global warming now occurring at three times the rate of the pre-industrial era.

Public health significance—Why is this work of significance to public health?
The study proposes a socio-ecological framework that considers both drivers and mitigation strategies for addressing heat-related illness in the elderly from the perspectives of global climate and policy, social determinants of health, and the individual.It will be essential to improve heat emergency warning systems and critical care management for older adults to prevent unnecessary morbidity and mortality in the wake of global warming.

The study proposes a socio-ecological framework that considers both drivers and mitigation strategies for addressing heat-related illness in the elderly from the perspectives of global climate and policy, social determinants of health, and the individual.

It will be essential to improve heat emergency warning systems and critical care management for older adults to prevent unnecessary morbidity and mortality in the wake of global warming.

Public health implications—What are the key implications or messages for practitioners, policymakers and/or researchers in public health?
Healthcare providers play an essential role in reducing the risks for heat-related illness through patient education regarding the symptoms of heat exhaustion and heat stroke.Advocacy for changes in public policy related to the built environment will be key to this effort, including addressing the problems of urban heat islands, providing public cooling centers during heat emergencies, and promoting the use of universal design concepts to improve pedestrian pathways for persons with limited mobility

Healthcare providers play an essential role in reducing the risks for heat-related illness through patient education regarding the symptoms of heat exhaustion and heat stroke.

Advocacy for changes in public policy related to the built environment will be key to this effort, including addressing the problems of urban heat islands, providing public cooling centers during heat emergencies, and promoting the use of universal design concepts to improve pedestrian pathways for persons with limited mobility

Problem Statement: Two global trends, including aging populations and the acceleration of global warming, are increasing the risk of heat-related illness, challenging the health of populations, and the sustainability of healthcare systems. Global warming refers to the increase in the Earth’s average surface temperature, generally attributed to the greenhouse effect, which is occurring at three times the rate of the pre-industrial era. The global population of older adults, defined here as individuals aged 60 and over, is expected to reach over 2 billion by mid-century. This population is particularly vulnerable to heat-related illness, specifically disruption of thermoregulation from excessive exposure to environmental heat due to metabolic and cognitive changes associated with aging. Objectives: This review examines heat-related illness and its impact on older adults within a socio-ecological framework, considering both drivers and mitigation strategies related to global warming, the built environment, social determinants of health, healthcare system responses, and the individual. The authors were motivated to create a conceptual model within this framework drawing on their lived experiences as healthcare providers interacting with older adults in a large urban area of the southwestern US, known for its extreme heat and extensive heat island effects. Based on this framework, the authors suggest actionable strategies supported by the literature to reduce the risks of morbidity and mortality. Methods: The literature search utilized a wide lens to identify evidence supporting various aspects of the hypothesized framework. In this sense, this review differs from systematic and scoping reviews, which seek a complete synthesis of the available literature or a mapping of the evidence. The first author conducted the literature search and synthesis, while the second and third authors reviewed and added publications to the initial search and conceptualized the socio-ecological framework. Discussion: This study is unique in its focus on a global trend that threatens the well-being of a growing population. The population health focus underscores social determinants of health and limitations of existing healthcare systems to guide healthcare providers in reducing older adults’ vulnerability to heat-related illness. This includes patient education regarding age-related declines in extreme heat tolerance, safe and unsafe physical activity habits, the impact of prescription drugs on heat tolerance, and, importantly, identifying the symptoms of heatstroke, which is a medical emergency. Additional strategies for improving survivability and quality of life for this vulnerable population include improved emergency response systems, better social support, and closer attention to evidence-based treatment for heat-related health conditions.