The Impact of Air Conditioning on Health in Hot Climates

As the scorching heat becomes more intense, air conditioning has become a common way to seek relief from high temperatures. However, recent research conducted by the Australian National University (ANU) highlights the potential health risks associated with excessive reliance on air conditioning, particularly in hotter parts of the world. This blog post will delve into the findings of the ANU study and explore alternative means of adapting to hotter climates while prioritising health and well-being.

The Heat-Related Mortality Challenge

Heatwaves are Australia’s deadliest natural hazard, surpassing bushfires, floods and storms in terms of fatalities. The ANU study suggests that climate change is exacerbating the risks associated with extreme heat, leading to increased heat-associated mortality, especially in hotter regions. Simon Quilty, the lead author of the study, is from the National Center for Epidemiology and Population Health at the Australian National University –  explains that regular exposure to the prevailing climate helps the body acclimatise, but constant reliance on air conditioning prevents this acclimatisation process. This lack of acclimatisation may increase vulnerability to heat-related health issues.

The Resilience of Indigenous Communities

Interestingly, the study found that First Nations communities in the Northern Territory of Australia exhibited greater resilience to extreme heat. They rely less on air conditioning due to personal preference or limited access, allowing their bodies to adapt and cope with high temperatures. Quilty notes that Aboriginal people often dislike over-air-conditioned environments and feel uncomfortable in them. Indigenous Australians have developed cultural practices, such as staying out of the hot afternoon sun and reducing physical exertion during warmer periods, which contribute to their resilience.

Socio-Cultural Adaptations and Passive Cooling

The ANU study emphasises the need for hot climate communities to consider socio-cultural means of adapting to hotter weather. This includes incorporating traditional practices and designing housing that promotes passive cooling, thereby reducing the reliance on energy-intensive air conditioning. Indigenous Australians have demonstrated the effectiveness of these measures over thousands of years.

Taking a Siesta and Acclimatisation

The research also highlights the potential benefits of taking a siesta or an afternoon nap, during the warmest part of the day. This practice assists the body in acclimatising to the heat. By allowing the body to rest and recover during peak temperatures, individuals can better cope with the challenging climate.


Conclusion: As we grapple with the consequences of climate change, it is essential to recognise the potential health risks associated with excessive reliance on air conditioning, especially in hotter climates. The ANU study urges communities to embrace socio-cultural adaptations, learn from the resilience of Indigenous populations, and design housing that prioritises passive cooling. By adopting these approaches, we can create a more sustainable and healthier future for all.

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