Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
Cancer & Tumors141 citations
Mobile phone use, exposure to radiofrequency electromagnetic field, and brain tumour: a case-control study
No Effects Found
Authors not listed · 2008
Japanese study of 322 brain tumor patients found no increased risk from mobile phone use despite sophisticated radiation exposure modeling.
Plain English Summary
Summary written for general audiences
Japanese researchers studied 322 brain tumor patients and 683 healthy controls to examine whether mobile phone use increases brain tumor risk. They found no significant increase in brain tumor risk from mobile phone use, even when accounting for the specific absorption rate (SAR) of radiation inside tumor tissue. All exposure levels were well below thermal heating thresholds.
Cite This Study
Unknown (2008). Mobile phone use, exposure to radiofrequency electromagnetic field, and brain tumour: a case-control study.
Show BibTeX
@article{mobile_phone_use_exposure_to_radiofrequency_electromagnetic_field_and_brain_tumour_a_case_control_study_ce945,
author = {Unknown},
title = {Mobile phone use, exposure to radiofrequency electromagnetic field, and brain tumour: a case-control study},
year = {2008},
doi = {10.1038/sj.bjc.6604214},
}Quick Questions About This Study
All maximal SAR values were below 0.1 W/kg, which is far lower than the level at which thermal effects occur. This represents relatively low exposure levels compared to current safety standards.
The adjusted odds ratio for glioma was 1.22, indicating a non-significant 22% increase in risk. However, researchers suggested this may reflect recall bias rather than true increased risk.
They used a novel approach calculating specific absorption rate (SAR) inside tumor tissue, accounting for spatial relationships between tumor location and radiofrequency distribution patterns within the skull.
Researchers examined 88 glioma patients, 132 meningioma patients, and 102 pituitary adenoma patients, totaling 322 cases compared against 683 individually matched healthy controls.
Yes, the odds ratio for meningioma was 0.70, suggesting a 30% decreased risk among mobile phone users, though this finding was not statistically significant.