英国の原子力発電所周辺で小児がんのリスク増加は認められず(No increased risk of childhood cancer near UK nuclear sites, study finds)

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2025-07-16 インペリアル・カレッジ・ロンドン(ICL)

英国の原子力発電所周辺で小児がんのリスク増加は認められず(No increased risk of childhood cancer near UK nuclear sites, study finds)The analysis found no evidence of increased risk of childhood cancers among children living near 28 nuclear installations between 1995 and 2016. (Credit: Davies, B. et al. Int J Epidemiol, 2025)

インペリアル・カレッジ・ロンドンらの最新研究によると、英国で送電線近くに住む子どもが白血病や他の小児がんにかかるリスクは上昇しないことが判明。送電線から50m以内の居住者の白血病リスクは有意に高くなく、他のがんでも同様の傾向。過去に報告されたリスク増加説は、地理的要因や社会経済的偏りが影響していた可能性が指摘されている。本研究は送電線と小児がんとの因果関係を否定し、健康リスクへの懸念を再評価する重要な科学的根拠となる。

<関連情報>

1995~2016年の英国の原子力施設周辺における小児がんの発生率 Childhood cancer incidence around nuclear installations in Great Britain, 1995–2016

Bethan Davies , Frédéric B Piel , Aina Roca-Barceló , Anna Freni Sterrantino , Hima Iyathooray Daby , Marta Blangiardo , Daniela Fecht , Frank de Vocht , Paul Elliott , Mireille B Toledano
International Journal of Epidemiology  Published:16 July 2025
DOI:https://doi.org/10.1093/ije/dyaf107

Abstract

Background

Concerns remain about the potential harmful health impact of nuclear installations. Historical clusters of leukaemia and non-Hodgkin’s lymphoma (LNHL) in children living near Sellafield and Dounreay installations in Great Britain remain aetiologically unexplained, and the sites remain under surveillance. We assess the risk of LNHL, central nervous system (CNS) and all solid tumours in children aged 0–14 years living within 25 km of nuclear installations in Great Britain, between 1995 and 2016.

Methods

We used a Poisson regression model to estimate the expected number of cases of each cancer type at the community-level in the study population, we present standardized incidence ratios compared to the national population. We used a hierarchical Poisson regression model to estimate the adjusted incidence rate ratios for each cancer type by distance between the community of residence and nearest nuclear installation.

Results

We found no evidence of elevated incidence of LNHL, CNS, or all solid tumours in children resident in communities in proximity to nuclear sites. Within the 25-km zone, there was no evidence of an increased risk of childhood cancer in communities closer to installations.

Conclusion

In post-1994 data, there was no evidence of an increased risk of childhood cancers in communities within 25 km of nuclear installations in Great Britain. Previously raised risks are no longer evident.

医療・健康
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