Oorzaken van hersentumoren: Mobiel bellen veroorzaakt vier keer zo vaak een oortumor aan oor waarmee wordt gebeld dan bij andere oor blijkt uit studie bij 750 personen.

15 oktober 2004: Bron: Karolinska Instituut

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Zweedse onderzoekers hebben in een studie gevonden dat onder 750 proefpersonen na tienjarig gebruik van mobiel bellen bij de studiepersonen vier keer zo vaak een oortumor ontstond aan de oorkant van het bellen dan aan de andere kant. Daarnaast hadden de mensen die niet of minder vaak mobiel belden geen verhoogd risico op een oortumor, waardoor via twee onderzoeksgegevens het bewijs van verhoogd riscio op kanker door mobiel bellen werd geleverd. De onderzoekers en artsen haasten zich met te verklaren dat 1 studie nog niet veel zegt en dat nog veel meer studies nodig zijn en dat daar ook de nodige aandacht en zorg voor is. Maar feit blijft dat ook in Duitsland recent nog een studie heeft bewezen dat dichtbij wonen onder een zendmast ook een grotere kans op het krijgen van kanker geeft. En ook hier bagetelliseren de medische autoriteiten de studiegegevens. Hoe lang moet het toch duren voor economische belangen eens minimaal gelijk gesteld worden aan belangen die onze gezondheid betreffen? Hier een persbericht over deze studie.

Mobile phone 'ear tumours risk'
Thursday, 14 October, 2004, 10:12 GMT 11:12 UK

Using a mobile phone for 10 years or more increases the risk of ear tumours by four times, research suggests.

A 750-people study by Sweden's Karolinska Institute found the risk of acoustic neuroma rose by 3.9 times on the side of the head the phone is used. There was no increase in risk on the other side of the head - giving an overall rise in risk of 1.9 times. Acoustic neuroma is a benign tumour in the auditory nerve, which can cause brain and nerve damage. It affects one in 100,000 people. Those who had used mobile phones for less than 10 years were not at a greater risk, the team reported.

If people are concerned the simple way to avoid risk is to use a hands-free kit

Prof Anders Ahlbom, of the Karolinska Institute
Out of the 750 people who took part in the study, 150 had acoustic neuroma and of those one in 11 had used a mobile phone for at least a decade. Professor Anders Ahlbom, from the Stockholm-based institute, told BBC News Online he was "surprised" by his team's findings. "The results show there is a relatively substantial risk and we are hoping others will follow up our research. "We do not know what is causing it but the risk certainly increases over time." He said he would not go as far as warning people not to use mobile phones. But he added: "If people are concerned the simple way to avoid risk is to use a hands-free kit. "Our researched showed that the risk is only on the side of the head on which the mobile phone is used." Risk

At the time of the study only analogue mobile phones had been in use for more than 10 years. The majority of people now have digital (GSM) phones, which came on to the market in the mid to late 1990s. Some of the people who took part in the study had used both analogue and digital phones. There was no evidence to suggest solely using digital phones for 10 years increased the risk. Dr Michael Clarke, a spokesman for the National Radiological Protection Board, the UK's advisory group, said it was a "good study from a well respected institute". He said: "It is suggestive rather than conclusive but we will obviously take it into account when we issue guidance in the future."
And a spokeswoman for the Mobile Operators Association said: "The mobile phone industry takes very seriously questions relating to the safety of its products and is committed to addressing public concern in an open and transparent manner." But she added: "Individual studies must be seen in the light of the total research effort into mobile phone safety. There have been other recent studies that have failed to show any link between mobile phones and tumours." Three quarters of adults in the UK own or use a mobile phone. The mobile phone industry has always maintained there is no scientific evidence of negative effects from mobile phone use. But over the last few years experts have remained divided over the question of risk. A study by Finnish scientists in 2002 found electromagnetic radiation, which is emitted from mobile phones, affected human brain tissue.
But the UK government-commissioned Stewart report in 2000 concluded there was no evidence of harm associated with using mobile phones. However, the report recommended a precautionary approach and said children should only use mobile phones in emergencies.

oortumoren, hersentumoren, mobiel bellen