Particulate matter
Traffic PM and nearby roads raised diabetes incidence
Open access · cc by · source: Europe PMC
In the Heinz Nixdorf Recall cohort, living within 100 m of a busy road and higher total PM10 were associated with more new type 2 diabetes over ~5 years.
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Discoveries this paper informs or conflicts with
- Traffic-specific particles carried more diabetes risk than total particle mass
This paper informs this development.
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Traffic PM and nearby roads raised diabetes incidence
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331 individuals developed diabetes during follow-up.
331 individuals developed diabetes during follow-up.
Which cohort was analyzed?
The analysis is based on the well-characterized population-based Heinz Nixdorf Recall Study.
Key findings
331 people developed diabetes. Mean PM2.5 was 16.7 μg/m³. An IQR increase in total PM10 had RR 1.20; living within 100 m of a busy road had RR 1.37 versus >200 m. Per 1 μg/m³, traffic-specific PM had larger RRs (~1.36) than total PM.
Methodology
Authors followed 3,607 adults without diabetes in a German urban cohort for a mean 5.1 years, assigning residential PM10 and PM2.5 from a source-specific chemistry-transport model (total and local traffic) and distance to busy roads.
Limitations
Observational incidence is not proof that PM causes diabetes; PM2.5 total-mass RR was 1.11 and not clearly significant, and exposure is modeled at the residence, not personal dose.
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