How pollution studies handle race may obscure cancer disparities
Nearly half of studies that included race or ethnicity used it only for statistical adjustment, limiting direct examination of disparities.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
This review asked how studies of environmental pollution and cancer handled race and ethnicity. Many used these characteristics only to adjust their analyses, leaving limited direct examination of disparities. Some studies reported stronger pollution–cancer associations in minoritized groups, but the review does not quantify how much pollution contributes to differences in cancer outcomes.
This abstract mainly summarizes research methods. It provides no pooled pollution–cancer estimate or quantified explanation of racial and ethnic disparities.
What researchers found
Studies using race or ethnicity only for adjustment
85/172 studies including race/ethnicity, compared with other analytical approaches in the review; study dates were not reported.
What adjustment leaves unanswered
Using race or ethnicity as an adjustment variable accounts for it within a statistical model. It does not, by itself, answer whether pollution–cancer associations differ between groups or whether exposure helps explain disparities.
What more focused analyses found
Other studies separated results by race or ethnicity, focused on a minoritized group, or examined estimated cancer risk. Many reported stronger associations in minority groups, while direct analysis of exposure as an explanation for disparities was rare.
The original publication
Hazardous Environmental Pollutants and Cancer Disparities: A Systematic Review on the Consideration of Race and Ethnicity in Environmental Epidemiology Research.
Schwalb ME, Visvanathan K, Connor AE et al.
Curr Environ Health Rep · 2025
- PubMed ID
- 41231307
- Record checked
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