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A prospective cohort study of adolescents' memory performance and individual brain dose of microwave radiation from wireless communication

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Abstract
BACKGROUND: The potential impact of microwave radiofrequency electromagnetic fields (RF-EMF) emitted by wireless communication devices on neurocognitive functions of adolescents is controversial. In a previous analysis, we found changes in figural memory scores associated with a higher cumulative RF-EMF brain dose in adolescents. OBJECTIVE: We aimed to follow-up our previous results using a new study population, dose estimation, and approach to controlling for confounding from media usage itself. METHODS: RF-EMF brain dose for each participant was modeled. Multivariable linear regression models were fitted on verbal and figural memory score changes over 1 y and on estimated cumulative brain dose and RF-EMF related and unrelated media usage (n = 669-676). Because of the hemispheric lateralization of memory, we conducted a laterality analysis for phone call car preference. To control for the confounding of media use behaviors, a stratified analysis for different media usage groups was also conducted. RESULTS: We found decreased figural memory scores in association with an interquartile range (IQR) increase in estimated cumulative RF-EMF brain dose scores: 0.22 (95% CI: 0.47, 0.03; IQR: 953 mJ/kg per day) in the whole sample, 0.39 (95% CI: 0.67, 0.10; IQR: 953 mJ/kg per day) in right-side users (n = 532), and 0.26 (95% CI: 0.42, 0.10; IQR: 341 mJ/kg per day) when recorded network operator data were used for RF-EMF dose estimation = 274). Media usage unrelated to RF-EMF did not show significant associations or consistent patterns, with the exception of consistent (nonsignificant) positive associations between data traffic duration and verbal memory. CONCLUSIONS: Our findings for a cohort of Swiss adolescents require confirmation in other populations but suggest a potential adverse effect of RF-EMF brain close on cognitive functions that involve brain regions mostly exposed during mobile phone use.
Keywords
MOBILE PHONE USE, RADIOFREQUENCY ELECTROMAGNETIC-FIELDS, MEDIAL, TEMPORAL-LOBE, EPIDEMIOLOGIC RESEARCH, SWISS ADOLESCENTS, WORKING-MEMORY, SLEEP EEG, EXPOSURE, CHILDREN, RATS

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Chicago
Foerster, Milena, Arno Thielens, Wout Joseph, Marloes Eeftens, and Martin Roosli. 2018. “A Prospective Cohort Study of Adolescents’ Memory Performance and Individual Brain Dose of Microwave Radiation from Wireless Communication.” Environmental Health Perspectives 126 (7).
APA
Foerster, M., Thielens, A., Joseph, W., Eeftens, M., & Roosli, M. (2018). A prospective cohort study of adolescents’ memory performance and individual brain dose of microwave radiation from wireless communication. ENVIRONMENTAL HEALTH PERSPECTIVES, 126(7).
Vancouver
1.
Foerster M, Thielens A, Joseph W, Eeftens M, Roosli M. A prospective cohort study of adolescents’ memory performance and individual brain dose of microwave radiation from wireless communication. ENVIRONMENTAL HEALTH PERSPECTIVES. Res triangle pk: Us Dept Health Human Sciences Public Health Science; 2018;126(7).
MLA
Foerster, Milena, Arno Thielens, Wout Joseph, et al. “A Prospective Cohort Study of Adolescents’ Memory Performance and Individual Brain Dose of Microwave Radiation from Wireless Communication.” ENVIRONMENTAL HEALTH PERSPECTIVES 126.7 (2018): n. pag. Print.
@article{8570863,
  abstract     = {BACKGROUND: The potential impact of microwave radiofrequency electromagnetic fields (RF-EMF) emitted by wireless communication devices on neurocognitive functions of adolescents is controversial. In a previous analysis, we found changes in figural memory scores associated with a higher cumulative RF-EMF brain dose in adolescents. OBJECTIVE: We aimed to follow-up our previous results using a new study population, dose estimation, and approach to controlling for confounding from media usage itself. METHODS: RF-EMF brain dose for each participant was modeled. Multivariable linear regression models were fitted on verbal and figural memory score changes over 1 y and on estimated cumulative brain dose and RF-EMF related and unrelated media usage (n = 669-676). Because of the hemispheric lateralization of memory, we conducted a laterality analysis for phone call car preference. To control for the confounding of media use behaviors, a stratified analysis for different media usage groups was also conducted. RESULTS: We found decreased figural memory scores in association with an interquartile range (IQR) increase in estimated cumulative RF-EMF brain dose scores: 0.22 (95\% CI: 0.47, 0.03; IQR: 953 mJ/kg per day) in the whole sample, 0.39 (95\% CI: 0.67, 0.10; IQR: 953 mJ/kg per day) in right-side users (n = 532), and 0.26 (95\% CI: 0.42, 0.10; IQR: 341 mJ/kg per day) when recorded network operator data were used for RF-EMF dose estimation = 274). Media usage unrelated to RF-EMF did not show significant associations or consistent patterns, with the exception of consistent (nonsignificant) positive associations between data traffic duration and verbal memory. CONCLUSIONS: Our findings for a cohort of Swiss adolescents require confirmation in other populations but suggest a potential adverse effect of RF-EMF brain close on cognitive functions that involve brain regions mostly exposed during mobile phone use.},
  articleno    = {077007},
  author       = {Foerster, Milena and Thielens, Arno and Joseph, Wout and Eeftens, Marloes and Roosli, Martin},
  issn         = {0091-6765},
  journal      = {ENVIRONMENTAL HEALTH PERSPECTIVES},
  language     = {eng},
  number       = {7},
  pages        = {13},
  publisher    = {Us Dept Health Human Sciences Public Health Science},
  title        = {A prospective cohort study of adolescents' memory performance and individual brain dose of microwave radiation from wireless communication},
  url          = {http://dx.doi.org/10.1289/EHP2427},
  volume       = {126},
  year         = {2018},
}

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