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Association between ambient temperature and cognitive function in a community-dwelling elderly population: a repeated
Yuan-Ting C Lo1, Wei-Peng Su1, Shu-Hsuan Mei1
1School of Public Health, National Defense Medical Center, Taipei, Taiwan.
BMJ Open
|December 8, 2021
Summary
Higher air temperature exposure is linked to increased cognitive impairment in Taiwanese older adults. Both short-term and long-term heat exposure significantly elevate the risk of moderate-to-severe cognitive decline.
Area of Science:
- Environmental Health
- Gerontology
- Neuroscience
Background:
- Limited evidence exists on air temperature's impact on cognitive function in Asian older adults.
- Understanding these associations is crucial for public health initiatives targeting cognitive decline.
Purpose of the Study:
- To investigate the relationship between short-term and long-term air temperature exposure and cognitive function in Taiwanese older adults.
- To assess the risk of cognitive impairment associated with varying temperature exposures.
Main Methods:
- Utilized data from the Taiwan Longitudinal Study on Aging, a nationwide, multiple-wave survey.
- Assessed cognitive function using the Short Portable Mental Status Questionnaire.
- Calculated temperature moving averages (TMAs) and employed generalized linear mixed models to analyze exposure effects.
Main Results:
- Both short-term and long-term air temperature exposure were positively associated with moderate-to-severe cognitive impairment.
- A 3-year TMA showed a significant increase in odds ratios (OR 1.247), with higher temperature quintiles correlating with higher ORs.
- Long-term TMA exposure demonstrated the strongest association (OR 3.674) after controlling for covariates.
Conclusions:
- Ambient temperature increases are associated with a higher risk of cognitive impairment in community-dwelling older adults in Taiwan.
- Findings highlight the potential impact of climate change on cognitive health in aging populations.
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