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Radon and Skin Cancer in Southwest England: An Ecologic Study

Tagged:
  • Community and Social Inequalities

Through detailed analysis of radon concentrations and reported rates of three types of skin cancer, this study has found evidence of an exposure-response relationship between radon concentrations and squamous cell carcinoma.

Radon, a naturally occurring radioactive gas, is a carcinogen that causes a small proportion of lung cancers among exposed populations. Theoretical models suggest that radon may also be a risk factor for skin cancer, but epidemiologic evidence for this relationship is weak. In this study, we investigated ecologic associations between environmental radon concentration and the incidence of various types of skin cancer.

We analyzed data for 287 small areas (postcode sectors) in southwest England for the years 2000–2004. Poisson regression was used to compare registration rates of malignant melanoma, basal cell carcinoma, and squamous cell carcinoma across mean indoor radon concentrations from household surveys. Analyses were adjusted for potentially confounding factors, including age, sex, population socioeconomic status, and mean hours of bright sunshine.

No association was observed between mean postcode sector radon concentration and either malignant melanoma or basal cell carcinoma registration rates. However, sectors with higher radon levels had higher squamous cell carcinoma registration rates, with evidence of an exposure-response relationship. Comparing highest and lowest radon categories, postcode sectors with mean radon ≥230 Bq/m3 had registration rates 1.76 (95% confidence interval=1.46–2.11) times those with mean radon 0–39 Bq/m3. Associations persisted after adjustment for potential confounders.

This ecologic study suggests that environmental radon exposure may be a risk factor for squamous cell carcinoma. Further study is warranted to overcome ecologic design limitations and to determine whether this relationship is generalizable to national and international settings.

The full study is published in the journal Epidemiology.

Full citation

Radon and Skin Cancer in Southwest England: An Ecologic Study. Wheeler, Benedict W.; Allen, James; Depledge, Michael H.; Curnow, Alison, Epidemiology: January 2012 - Volume 23 - Issue 1 - p 44–52.

Radon and Skin Cancer in Southwest England: An Ecologic Study

Authors

  • Prof Ben Wheeler

    Prof Ben Wheeler

  • Prof Alison Curnow

    Prof Alison Curnow

  • Prof Michael Depledge

    Prof Michael Depledge

Full author list

Benedict W Wheeler, James Allen, Michael H Depledge, Alison Curnow

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