Impact of Radiofrequency Exposure From Mobile Phones on the Risk of Developing Brain Tumors in Korean and Japanese Adolescents: A MOBI-Kids Case-control Study

Background: This study aimed to examine the association between risk of brain tumors and radiofrequency (RF) exposure from mobile phones among young people in Korea and Japan. Methods: This case-control study of brain tumors in young people was conducted in Korea and Japan under the framework of the...

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Main Authors: Noriko Kojimahara, Yong-Han Lee, Ae-Kyoung Lee, Sanghyuk Bae, Ho-Jang Kwon, Mina Ha, Yasuto Sato, Masao Taki, Joe Wiart, C.E. Langer, Elisabeth Cardis
Format: Article
Language:English
Published: Japan Epidemiological Association 2024-04-01
Series:Journal of Epidemiology
Subjects:
Online Access:https://www.jstage.jst.go.jp/article/jea/34/4/34_JE20230005/_pdf
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author Noriko Kojimahara
Yong-Han Lee
Ae-Kyoung Lee
Sanghyuk Bae
Ho-Jang Kwon
Mina Ha
Yasuto Sato
Masao Taki
Joe Wiart
C.E. Langer
Elisabeth Cardis
author_facet Noriko Kojimahara
Yong-Han Lee
Ae-Kyoung Lee
Sanghyuk Bae
Ho-Jang Kwon
Mina Ha
Yasuto Sato
Masao Taki
Joe Wiart
C.E. Langer
Elisabeth Cardis
author_sort Noriko Kojimahara
collection DOAJ
description Background: This study aimed to examine the association between risk of brain tumors and radiofrequency (RF) exposure from mobile phones among young people in Korea and Japan. Methods: This case-control study of brain tumors in young people was conducted in Korea and Japan under the framework of the international MOBI-Kids study. We included 118 patients diagnosed with brain tumors between 2011 and 2015 and 236 matched appendicitis controls aged 10–24 years. Information on mobile phone use was collected through face-to-face interviews. A detailed RF exposure algorithm, based on the MOBI-Kids algorithm and modified to account for the specificities of Japanese and Korean phones and networks, was used to calculate the odds ratios (ORs) for total cumulative specific energy using conditional logistic regression. Results: The adjusted ORs in the highest tertile of cumulative call time at 1 year before the reference date were 1.61 (95% confidence interval [CI], 0.72–3.60) for all brain tumors and 0.70 (95% CI, 0.16–3.03) for gliomas, with no indication of a trend with exposure. The ORs for glioma specifically, were below 1 in the lowest exposure category. Conclusion: This study provided no evidence of a causal association between mobile phone use and risk of brain tumors as a whole or of glioma specifically. Further research will be required to evaluate the impact of newer technologies of communication in the future.
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spelling doaj.art-3e8a5e6562994556a369c75ec70295ee2024-04-05T10:03:41ZengJapan Epidemiological AssociationJournal of Epidemiology0917-50401349-90922024-04-0134418018610.2188/jea.JE20230005Impact of Radiofrequency Exposure From Mobile Phones on the Risk of Developing Brain Tumors in Korean and Japanese Adolescents: A MOBI-Kids Case-control StudyNoriko Kojimahara0Yong-Han Lee1Ae-Kyoung Lee2Sanghyuk Bae3Ho-Jang Kwon4Mina Ha5Yasuto Sato6Masao Taki7Joe Wiart8C.E. Langer9Elisabeth Cardis10Section of Epidemiology, Shizuoka Graduate University of Public Health, Shizuoka, JapanDepartment of Preventive Medicine, College of Medicine, Dankook University, Chungnam, Republic of KoreaRadio Technology Research Department, Electronics and Telecommunications Research Institute (ETRI), Daejeon, Republic of KoreaDepartment of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of KoreaDepartment of Preventive Medicine, College of Medicine, Dankook University, Chungnam, Republic of KoreaDepartment of Preventive Medicine, College of Medicine, Dankook University, Chungnam, Republic of KoreaSection of Epidemiology, Shizuoka Graduate University of Public Health, Shizuoka, JapanElectromagnetic Compatibility Laboratory, National Institute of Information and Communications Technology, Tokyo, JapanLaboratoire de Traitement et Communication de l’Information (LTCI), Telecom Paris, Institut Polytechnique de Paris, Palaiseau, FranceBarcelona Institute for Global Health (ISGlobal), Barcelona, SpainBarcelona Institute for Global Health (ISGlobal), Barcelona, SpainBackground: This study aimed to examine the association between risk of brain tumors and radiofrequency (RF) exposure from mobile phones among young people in Korea and Japan. Methods: This case-control study of brain tumors in young people was conducted in Korea and Japan under the framework of the international MOBI-Kids study. We included 118 patients diagnosed with brain tumors between 2011 and 2015 and 236 matched appendicitis controls aged 10–24 years. Information on mobile phone use was collected through face-to-face interviews. A detailed RF exposure algorithm, based on the MOBI-Kids algorithm and modified to account for the specificities of Japanese and Korean phones and networks, was used to calculate the odds ratios (ORs) for total cumulative specific energy using conditional logistic regression. Results: The adjusted ORs in the highest tertile of cumulative call time at 1 year before the reference date were 1.61 (95% confidence interval [CI], 0.72–3.60) for all brain tumors and 0.70 (95% CI, 0.16–3.03) for gliomas, with no indication of a trend with exposure. The ORs for glioma specifically, were below 1 in the lowest exposure category. Conclusion: This study provided no evidence of a causal association between mobile phone use and risk of brain tumors as a whole or of glioma specifically. Further research will be required to evaluate the impact of newer technologies of communication in the future.https://www.jstage.jst.go.jp/article/jea/34/4/34_JE20230005/_pdfradiofrequency exposuremobile phonesbrain tumorscase-control studyadolescents
spellingShingle Noriko Kojimahara
Yong-Han Lee
Ae-Kyoung Lee
Sanghyuk Bae
Ho-Jang Kwon
Mina Ha
Yasuto Sato
Masao Taki
Joe Wiart
C.E. Langer
Elisabeth Cardis
Impact of Radiofrequency Exposure From Mobile Phones on the Risk of Developing Brain Tumors in Korean and Japanese Adolescents: A MOBI-Kids Case-control Study
Journal of Epidemiology
radiofrequency exposure
mobile phones
brain tumors
case-control study
adolescents
title Impact of Radiofrequency Exposure From Mobile Phones on the Risk of Developing Brain Tumors in Korean and Japanese Adolescents: A MOBI-Kids Case-control Study
title_full Impact of Radiofrequency Exposure From Mobile Phones on the Risk of Developing Brain Tumors in Korean and Japanese Adolescents: A MOBI-Kids Case-control Study
title_fullStr Impact of Radiofrequency Exposure From Mobile Phones on the Risk of Developing Brain Tumors in Korean and Japanese Adolescents: A MOBI-Kids Case-control Study
title_full_unstemmed Impact of Radiofrequency Exposure From Mobile Phones on the Risk of Developing Brain Tumors in Korean and Japanese Adolescents: A MOBI-Kids Case-control Study
title_short Impact of Radiofrequency Exposure From Mobile Phones on the Risk of Developing Brain Tumors in Korean and Japanese Adolescents: A MOBI-Kids Case-control Study
title_sort impact of radiofrequency exposure from mobile phones on the risk of developing brain tumors in korean and japanese adolescents a mobi kids case control study
topic radiofrequency exposure
mobile phones
brain tumors
case-control study
adolescents
url https://www.jstage.jst.go.jp/article/jea/34/4/34_JE20230005/_pdf
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