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Use of cellular telephones and the risk for brain tumours: A case-control study.

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Hardell, L, Nasman, A, Pahlson, A, Hallquist, A, Hansson Mild, K · 1999

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Overall cellular telephone use showed no increased brain tumour risk, but a non-significant increase was seen for tumours in the temporal or occipital lobe on the same side as phone use.

Plain English Summary

Summary written for general audiences

Researchers conducted a case-control study with 209 brain tumour cases and 425 controls in Sweden. Overall cellular telephone use yielded an odds ratio of 0.98 with a 95% confidence interval. Separate analyses for the digital GSM system and the analogue NMT system gave odds ratios of 0.97 and 0.94 respectively. A non-significantly increased risk was found for tumours in the temporal or occipital lobe on the same side as phone use. The increased risk was only seen for use of the NMT system.

Why This Matters

Dose-response analysis and different tumour induction periods produced similar results. The authors noted that observation time for GSM use was still too short for definite conclusions. They recommended that future research especially examine brain tumour risk in the anatomical area close to cellular telephone use.

Study Details

The aim of this study is to investigate Use of cellular telephones and the risk for brain tumours: A case-control study.

All cases, both males and females, with histopathologically verified brain tumour living in Uppsala-...

The analyses were based on answers from 209 (90%) cases and 425 (91%) controls. Use of cellular tele...

Non-significantly increased risk was found for tumour in the temporal or occipital lobe on the same side as a cellular phone had been used, right side OR = 2.45, CI = 0.78-7.76, left side OR = 2.40, CI = 0.52-10.9 Increased risk was found only for use of the NMT system. For GSM use the observation time is still too short for definite conclusions. An increased risk for brain tumour in the anatomical area close to the use of a cellular telephone should be especially studied in the future.

Cite This Study
Hardell, L, Nasman, A, Pahlson, A, Hallquist, A, Hansson Mild, K (1999). Use of cellular telephones and the risk for brain tumours: A case-control study. Int J Oncol 15(1):113-116, 1999.
Show BibTeX
@article{hardell_1999_use_of_cellular_telephones_2160,
  author = {Hardell and L and Nasman and A and Pahlson and A and Hallquist and A and Hansson Mild and K},
  title = {Use of cellular telephones and the risk for brain tumours: A case-control study.},
  year = {1999},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/10375602/},
}
PubMed: 10375602

Cited By (304 papers)

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Quick Questions About This Study

Overall cellular telephone use gave an odds ratio of 0.98 with a 95% confidence interval, indicating no increased risk.
A non-significantly increased risk was found for tumours in the temporal or occipital lobe on the same side as phone use.
The increased risk for same-side tumours was found only for use of the NMT system.
The authors recommended that an increased risk for brain tumour in the anatomical area close to cellular telephone use should be especially studied in the future.