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Betreff:
Long-term use of
cellular phones and brain tumours: increased risk associated with use for 10
years |
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Von: Lourdes Salvador |
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Datum: Tue, 4 Sep 2007 11:18:15 -1000 |
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Long-term use of cellular phones and brain tumours: increased risk associated
with use for 
10 yearsMichael Carlberg2 ,
Fredrik Söderqvist3 , Kjell Hansson Mild4
and L. Lloyd Morgan5
1 Department of
Oncology, University Hospital, Örebro and Department of Natural Sciences,
Örebro University, Örebro, Sweden
2 Department of Oncology, University Hospital, Örebro, Sweden
3 Department of Oncology, University Hospital and Institute of
Clinical Medicine, Örebro University, Örebro, Sweden
4 National Institute for Working Life, Umeå and Department of
Natural Sciences, Örebro University, Örebro, Sweden
5 Francisco Street, Berkeley, California, USA
Correspondence
to:
Dr L Hardell
Department of Oncology, University Hospital, SE-701 85 Örebro, Sweden; lennart.hardell@orebroll.se
Accepted 28 March 2007
ABSTRACT
TOP
ABSTRACT
METHODS
RESULTS
DISCUSSION
REFERENCES
Aim: To evaluate brain tumour risk among long-term users of cellular
telephones.
Methods: Two cohort studies and 16
case–control studies on this topic were identified. Data were
scrutinised for use of mobile phone for 
10 years and
ipsilateral exposure if presented.
Results: The cohort study was of limited
value due to methodological shortcomings in the study. Of the 16
case–control studies, 11 gave results for 10 years’ use or
latency period. Most of these results were based on low numbers. An
association with acoustic neuroma was found in four studies in the
group with at least 10 years’ use of a mobile phone. No risk was
found in one study, but the tumour size was significantly larger among
users. Six studies gave results for malignant brain tumours in that
latency group. All gave increased odd ratios (OR), especially for
ipsilateral exposure. In a meta-analysis, ipsilateral cell phone use
for acoustic neuroma was OR = 2.4 (95% CI 1.1 to 5.3) and OR = 2.0,
(1.2 to 3.4) for glioma using a tumour latency period of 10 years.
Conclusions: Results from present studies on use
of mobile phones for 10 years give a consistent pattern
of increased risk for acoustic neuroma and glioma. The risk is
highest for ipsilateral exposure.
Abbreviations: DECT, digital enhanced cordless
telecommunications; RF, radiofrequency; SIR, standardised incidence ratio;
UMTS, universal mobile telecommunication system
Keywords: mobile phones; acoustic neuroma;
glioma; ipsilateral exposure\
10 years1 Department of
Oncology, University Hospital, Örebro and Department of Natural Sciences,
Örebro University, Örebro, Sweden
2 Department of Oncology, University Hospital, Örebro, Sweden
3 Department of Oncology, University Hospital and Institute of
Clinical Medicine, Örebro University, Örebro, Sweden
4 National Institute for Working Life, Umeå and Department of
Natural Sciences, Örebro University, Örebro, Sweden
5 Francisco Street, Berkeley, California, USA
Correspondence
to:
Dr L Hardell
Department of Oncology, University Hospital, SE-701 85 Örebro, Sweden; lennart.hardell@
Accepted 28 March 2007
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ABSTRACT |
|
|
Aim: To evaluate brain tumour risk among long-term users of cellular
telephones.
Methods: Two cohort studies and 16
case–control studies on this topic were identified. Data were
scrutinised for use of mobile phone for 10 years and
ipsilateral exposure if presented.
Results: The cohort study was of limited
value due to methodological shortcomings in the study. Of the 16
case–control studies, 11 gave results for 10 years’ use or
latency period. Most of these results were based on low numbers. An
association with acoustic neuroma was found in four studies in the
group with at least 10 years’ use of a mobile phone. No risk was
found in one study, but the tumour size was significantly larger among
users. Six studies gave results for malignant brain tumours in that
latency group. All gave increased odd ratios (OR), especially for
ipsilateral exposure. In a meta-analysis, ipsilateral cell phone use
for acoustic neuroma was OR = 2.4 (95% CI 1.1 to 5.3) and OR = 2.0,
(1.2 to 3.4) for glioma using a tumour latency period of 10 years.
Conclusions: Results from present studies on use
of mobile phones for 10 years give a consistent pattern
of increased risk for acoustic neuroma and glioma. The risk is
highest for ipsilateral exposure.
Abbreviations: DECT, digital enhanced cordless
telecommunications; RF, radiofrequency; SIR, standardised incidence ratio;
UMTS, universal mobile telecommunication system
Keywords: mobile phones; acoustic neuroma;
glioma; ipsilateral exposure\