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Updated Mortality Analysis of SELTINE, the French Cohort of Nuclear Workers, 1968-2014. | LitMetric

AI Article Synopsis

  • The study investigates the health impacts of prolonged low-dose ionizing radiation exposure among a large cohort of French nuclear workers, followed from 1968 to 2014.
  • Using Poisson regression, the researchers assessed mortality rates for cancer and non-cancer diseases in this group compared to the general population, focusing on specific cancers and conditions linked to radiation exposure.
  • Results indicated a significant association between ionizing radiation and mortality from leukemia and neurodegenerative diseases, but pleural cancer mortality and solid cancers showed mixed results, emphasizing the need for further research due to uncertainties in the data.

Article Abstract

Cohorts of nuclear workers are particularly relevant to study the health effects of protracted exposures to low doses at low dose-rates of ionizing radiation (IR). In France, a cohort of nuclear workers badge-monitored for external IR exposure has been followed-up for several decades. Its size and follow-up period have recently been extended. The present paper focuses on mortality from both cancer and non-cancer diseases in this cohort. The SELTINE cohort of nuclear workers employed by CEA, Orano, and EDF companies was followed-up for mortality from 1968 to 2014. Mortality in the cohort was compared to that in the French general population. Poisson regression methods were used to estimate excess relative rates of mortality per unit of cumulative dose of IR, adjusted for calendar year, age, company, duration of employment, and socioeconomic status. The cohort included 80,348 workers. At the end of the follow-up, the mean attained age was 63 years, and 15,695 deaths were observed. A strong healthy worker effect was observed overall. A significant excess of pleural cancer mortality was observed but not associated with IR dose. Death from solid cancers was positively but non-significantly associated with radiation. Death from leukaemia (excluding chronic lymphocytic leukaemia), dementia, and Alzheimer's disease were positively and significantly associated with IR dose. Estimated dose-risk relationships were consistent with those from other nuclear worker studies for all solid cancers and leukaemia but remained associated with large uncertainty. The association between IR dose and dementia mortality risk should be interpreted with caution and requires further investigation by other studies.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9817793PMC
http://dx.doi.org/10.3390/cancers15010079DOI Listing

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