Air pollution and temperature jointly linked to blood sugar
A cross-sectional analysis of 21,259 people without diabetes linked air pollution and temperature, including their interaction, to a measure of average blood sugar.
Our read
Populations- Studied:
- Cross-sectional study of 21,259 participants without diabetes
- What changed:
- Improved air quality predicted lower blood sugar, while climate change-related temperature shifts predicted higher blood sugar
- In the record:
- The 20th paper on greenness with results in people; 28 on record in all.
- Why it’s aging research:
- It bears on staying healthy in midlife and later life.
Editor of record: Boris Djordjevic · AgingResearch.News
In 21,259 participants without diabetes from European cohorts, researchers assessed cross-sectional links between environmental exposures and glycated hemoglobin, a measure of average blood sugar. They analyzed 33,989 measurements collected between 1999 and 2021 alongside annual air pollution, greenery and temperature exposures.
Their statistical model identified coarse airborne particle concentrations, variation in daily average temperature and their interactions as potentially important. Scenarios involving improved air quality predicted lower blood sugar measurements, while scenarios involving climate change-related temperature shifts predicted higher measurements. The predicted benefits of cleaner air gained relevance under climate change, particularly among nonsmokers. The model did not select greenery as an influential factor, either alone or in combination with pollution or temperature.
Why it matters
Metabolic health is relevant to healthy aging. The authors argue that meeting World Health Organization air-quality guidelines may become increasingly important as the climate changes.
Caveats
The cross-sectional analysis cannot establish cause and effect, and the environmental scenarios were predictions rather than observed changes. The findings do not necessarily extend to people with diabetes.
The paper
Joint effects of air pollution and temperature on glycemia: An exposome analysis in European cohorts
Swiss Tropical and Public Health Institute
Environment International, Sep 23, 2026, Open access
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