The cost of heating and cooling the home, and increasing social isolation are significant factors in the health risk of older adults during extreme weather, according to a new study by the University of Warwick.

The research, published in PLOS ONE, also reveals how poor understanding of the dangers of extreme heat or cold also affected how well older adults adapt to adverse weather conditions such as a heat wave or cold snap.

The research from Warwick Medical School used an asset-based approach to determine how capable those adults were in adapting to the negative effects of extreme weather conditions.

An asset-based approach involves categorizing all the resources, both tangible and non-tangible, that individuals need to maintain their health and wellbeing and assessing their access to those and the ability to utilize them.

Respiratory and cardiovascular diseases

Older adults (aged 65+) are considered a high-risk group to the impacts of extreme temperatures. Direct and indirect effects of heat waves and cold waves are associated with an increase in respiratory and cardiovascular diseases.

This contributed to an estimated 50,100 excess winter deaths in England and Wales in 2017-18 and an estimated 1,246 excess deaths in June to July 2018 according to recent figures from the Office for National Statistics.

The findings of this research have national and international relevance and it recommends implementing a number of measures to policymakers to respond to temperature extremes:

1. Improve individuals' health status

2. Strengthen knowledge of what to do in the case of extreme temperatures and to be proactive

3. Improve the general awareness of risks and impacts by the individual

4. Improve social networks around the individual, and strengthen the links between health and social care teams

5. In countries where GP appointments are charged for, reduce the cost compared with overall income

6. Implement policy measures to reduce poverty, hunger and improve the quality of housing stock

Lead author Dr. Raquel Nunes from Warwick Medical School used over 45 interviews with older adults living in Lisbon, Portugal, conducted in both summer and winter. She said: "The findings of this research are comparable to that in the UK, France, US, New Zealand and internationally that also found that low educational levels, low income, lack of mobility, lack of housing insulation and weak social networks had adverse consequences on older adults' ability to respond to extreme temperatures.

"We show that the vast majority of older adults face restrictions in availability and access to assets that impact on their ability to respond to extreme temperatures. Despite this, participants in this research revealed a range of opportunities for enhancing their adaptation strategies, drawing on assets that they would welcome," said Nunes.

The research identified a strong sense of independence in older adults, which helped to enable those people to adapt to changing weather conditions. However, expenses such as high electricity and gas prices and low income/pensions were seen as constraints, as well as a general misunderstanding of the risks and cost-effectiveness of technologies such as heaters and fans. As a result, older people did not prioritize investing in cooling and heating their homes, with tenants often more affected than homeowners.

Participants with the lowest literacy (primary school education or less) and with a poor understanding of what to do during hot/cold weather preferred personalized advice provided by specialists (i.e. GP, Nurse, Community or Council officers) to general advice such as leaflets or information in the media. Social interaction with family, neighbors, and services was perceived as a 'lifeline' as their advice was seen to be more trustworthy.