8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.

Estimated whole-brain and lobe-specific radiofrequency electromagnetic fields doses and brain volumes in preadolescents Alba Cabré-Riera, Hanan El Marroun, Ryan Muetzel, Luuk van Wel, Ilaria Liorni, Arno Thielens, Laura Ellen Birks, Livia Pierotti, Anke Huss, Wout Joseph, Joe Wiart, Myles Capstick, Manon Hillegers, Roel Vermeulen, Elisabeth Cardis, Martine Vrijheid, Tonya White, Martin Röösli, Henning Tiemeier, Mònica Guxens

Bioeffects Seen

Authors not listed · 2020

Share:

Large study of 2,592 children found smaller brain regions linked to internet device use, though radiation versus lifestyle effects remain unclear.

Plain English Summary

Summary written for general audiences

Dutch researchers studied 2,592 children aged 9-12 to see if radiofrequency radiation from phones, tablets, and WiFi affected their brain structure using MRI scans. They found no association between RF exposure and overall brain volumes, but children with higher exposure from internet-connected devices had slightly smaller caudate brain regions. The researchers noted this finding might reflect lifestyle factors rather than radiation effects.

Why This Matters

This Generation R Study represents one of the most comprehensive attempts to measure real-world RF exposure in children's developing brains. The finding of smaller caudate volumes associated with internet-connected device use deserves attention, even if the researchers hedge their conclusions. The caudate plays crucial roles in learning, memory, and reward processing. What's particularly concerning is that the average whole-brain dose of 84.3 mJ/kg/day came primarily from everyday activities that parents consider harmless. The temporal lobe received nearly four times higher doses at 307.1 mJ/kg/day, precisely where we'd expect the greatest impact from handheld devices. While the researchers suggest lifestyle factors might explain their findings, we can't ignore that developing brains are being exposed to unprecedented levels of artificial electromagnetic radiation during critical growth periods.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2020). Estimated whole-brain and lobe-specific radiofrequency electromagnetic fields doses and brain volumes in preadolescents Alba Cabré-Riera, Hanan El Marroun, Ryan Muetzel, Luuk van Wel, Ilaria Liorni, Arno Thielens, Laura Ellen Birks, Livia Pierotti, Anke Huss, Wout Joseph, Joe Wiart, Myles Capstick, Manon Hillegers, Roel Vermeulen, Elisabeth Cardis, Martine Vrijheid, Tonya White, Martin Röösli, Henning Tiemeier, Mònica Guxens.
Show BibTeX
@article{estimated_whole_brain_and_lobe_specific_radiofrequency_electromagnetic_fields_doses_and_brain_volumes_in_preadolescents_alba_cabr_riera_hanan_el_marroun_ryan_muetzel_luuk_van_wel_ilaria_liorni_arno_th_ce4751,
  author = {Unknown},
  title = {Estimated whole-brain and lobe-specific radiofrequency electromagnetic fields doses and brain volumes in preadolescents Alba Cabré-Riera, Hanan El Marroun, Ryan Muetzel, Luuk van Wel, Ilaria Liorni, Arno Thielens, Laura Ellen Birks, Livia Pierotti, Anke Huss, Wout Joseph, Joe Wiart, Myles Capstick, Manon Hillegers, Roel Vermeulen, Elisabeth Cardis, Martine Vrijheid, Tonya White, Martin Röösli, Henning Tiemeier, Mònica Guxens},
  year = {2020},
  doi = {10.1016/j.envint.2020.105808},
  
}

Quick Questions About This Study

Children received an average whole-brain radiofrequency dose of 84.3 mJ/kg/day from all sources combined. The temporal lobe, closest to phones, received the highest exposure at 307.1 mJ/kg/day, nearly four times the whole-brain average.
The caudate nucleus showed smaller volumes in children with higher RF exposure from internet-connected devices. This brain region is important for learning, memory formation, and processing rewards and motivation in developing children.
Phone calls showed no association with brain volume changes, while internet browsing, texting, and tablet use were linked to smaller caudate regions. The researchers suggest this difference might reflect lifestyle factors rather than radiation exposure patterns.
The Generation R Study analyzed 2,592 preadolescents aged 9-12 years from Rotterdam, Netherlands. This represents one of the largest studies examining radiofrequency exposure and brain structure in children using MRI scanning technology.
Researchers acknowledge that social and behavioral factors related to device use, rather than RF radiation itself, might explain the smaller brain volumes. However, they cannot rule out direct electromagnetic effects or residual confounding factors.