Measurement of personal radio frequency exposure in Japan: The Hokkaido Study on the Environment and Children's health

Authors: Yamazaki K, Ikeda-Araki A, Miyashita C, Tamura N, Yoshikawa T, Hikage T, Omiya M, Mizuta M, Ikuyo M, Tobita K, Onishi T, Taki M, Watanabe S, Kishi R

Year: 2022 Sep 26

Category: Environmental Health

Journal: Environ Res

Institution: Hokkaido University

DOI: 10.1016/j.envres.2022.114429

URL: https://pubmed.ncbi.nlm.nih.gov/36174753/

Abstract

Overview

The increasing exposure of children to radiofrequency electromagnetic fields (RF-EMF) is a growing concern, particularly in urban areas of Japan. This study utilizes personal exposure meters to quantify RF-EMF levels among a sample of 101 children aged 10-15, further examining environmental and behavioral factors influencing such exposures.

Findings

Various frequency bands were analyzed, including mobile base station downlink and uplink, Wireless LANs, and digital TV transmission.
Data revealed that personal RF-EMF exposure levels in Japanese children are comparatively lower than European data but underscore significant contributions from mobile phone base stations.
Exposure tends to increase with urban residency and is associated with higher usage of mobile devices and the internet, especially at night.
A noteworthy finding is the association between RF-EMF exposure from Wireless LAN at night and inattention/hyperactivity symptoms in children.

Conclusion

The study confirms significant environmental and lifestyle associations with RF-EMF exposure. While initial findings highlight lower exposure levels compared to European nations, continued monitoring and expanded studies are suggested to delve deeper into the causative factors and potential health impacts linked to prolonged exposure in Japanese children.

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