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Case-control study on cellular and cordless telephones and the risk for acoustic neuroma or meningioma in patients diagnosed 2000-2003.

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Hardell L, Carlberg M, Hansson Mild K. · 2005

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Long-term cell phone use more than doubled brain tumor risk, with the highest risks appearing after 15 years of regular use.

Plain English Summary

Summary written for general audiences

Swedish researchers studied 413 people with benign brain tumors and 692 healthy controls to examine whether cell phone and cordless phone use increases brain tumor risk. They found that older analog phones quadrupled the risk of acoustic neuroma (a nerve tumor affecting hearing) and doubled the risk of meningioma (a brain membrane tumor), with risks increasing dramatically after 10-15 years of use. Even digital phones showed elevated risks, suggesting long-term phone use may contribute to brain tumor development.

Why This Matters

This Swedish study adds compelling evidence to concerns about long-term cell phone use and brain tumors. The science demonstrates particularly striking results for acoustic neuromas, with analog phone users showing 4 times higher risk that jumped to over 8 times higher risk after 15 years of use. What makes this research significant is its focus on latency periods - the time between exposure and disease development. The reality is that brain tumors can take decades to develop, making these long-term findings especially relevant. While analog phones are largely obsolete, this study's findings on digital phones (doubling acoustic neuroma risk) remain highly relevant to today's smartphone users. The evidence shows that even cordless home phones contributed to increased risks, highlighting how pervasive our daily RF exposure has become.

Exposure Information

Specific exposure levels were not quantified in this study.

Study Details

The aim of this study is to investigate Case-control study on cellular and cordless telephones and the risk for acoustic neuroma or meningioma in patients diagnosed 2000-2003.

We performed a case-control study on the use of cellular and cordless telephones and the risk for br...

We report the results for benign brain tumors with data from 413 cases (89% response rate), 305 with...

In the multivariate analysis, analogue phones represented a significant risk factor for acoustic neuroma.

Cite This Study
Hardell L, Carlberg M, Hansson Mild K. (2005). Case-control study on cellular and cordless telephones and the risk for acoustic neuroma or meningioma in patients diagnosed 2000-2003. Neuroepidemiology 25:120-128, 2005.
Show BibTeX
@article{l_2005_casecontrol_study_on_cellular_2167,
  author = {Hardell L and Carlberg M and Hansson Mild K.},
  title = {Case-control study on cellular and cordless telephones and the risk for acoustic neuroma or meningioma in patients diagnosed 2000-2003.},
  year = {2005},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/15956809/},
}
PubMed: 15956809

Cited By (139 papers)

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Quick Questions About This Study

Yes, analog phones showed significantly higher brain tumor risks than digital phones in this Swedish study. Analog phones quadrupled acoustic neuroma risk and doubled meningioma risk, while digital phones showed more modest increases. The older analog technology appears more harmful than current digital systems.
After 15 years of analog phone use, acoustic neuroma risk increased 8.4 times compared to non-users, according to this 2005 Swedish study. Digital phones doubled the risk after long-term use. Acoustic neuromas are benign tumors affecting the hearing nerve.
Cordless phones showed mixed results in this study. They increased meningioma risk to some extent but didn't significantly increase acoustic neuroma risk. Both cordless and cellular phones elevated brain tumor risks, though analog cell phones posed the highest risk overall.
Meningioma risk from analog phones doubled after 10 years of use in this Swedish study of 413 brain tumor patients. The risk increased from 1.7 times to 2.1 times higher when researchers examined users with over 10 years of exposure history.
This Swedish study specifically examined benign brain tumors, finding increased risks for meningiomas and acoustic neuromas from phone use. The researchers studied 413 patients with benign tumors, not malignant brain cancers, so these findings apply to non-cancerous tumor development.