27.06.2006 16:37 Uhr

Handys und deren Auswirkung auf die Gesundheit der Benutzer sind ein Dauerbrenner bei den Technik-News. Jetzt gibt es dazu eine neue Studie, die behauptet, dass die Mobilfunksignale bestimmte Bereiche des Gehirns reizen. Das bedeutet zwar nicht zwangsläufig eine Schädigung des Gehirns, könnte aber trotzdem für bestimmte Personengruppen problematisch sein.

Von Hans-Christian Dirscherl

Die Strahlung von Handys reizt den Teil der Hirnrinde, der am nächsten zum Mobiltelefon gelegen ist. Zu diesem Ergebnis kommen italienische Wissenschaftler, wie CNN Online berichtet. Allerdings besteht noch keine Klarheit darüber, ob die Hirn-Reizung, die von einem GSM-Mobiltelefon ausgeht, gefährlich ist.

Die Wissenschaftler vom Fatebenefratelli-Krankenhaus aus Mailand überwachten mit Hilfe der Transcranial Magnetic Stimulation (TMS)-Methode die Hirn-Funktion von Menschen, während diese telefonierten. Bei den Probanten handelte es sich um 15 junge Männer, die mit einem GSM 900-Handy 45 Minuten telefonierten. Bei zwölf Testkandidaten wurde die dem Handy nächstgelegene "motorische Rinde" während des Gesprächs gereizt. Innerhalb einer Stunde normalisierte sich das allerdings wieder.

Die Forscher betonen, dass das nicht zwangsläufig bedeutet, dass Mobilfunkstrahlung schädlich für das Gehirn ist. Aber sie halten es für möglich, dass diese Reizung Folgen bei Menschen haben könnte, die besonders veranlagt sind, also beispielsweise zu epileptischen Anfällen neigen.

PC-Welt Online

Copyright © sueddeutsche.de GmbH/Süddeutsche Zeitung GmbH

http://www.sueddeutsche.de/computer/artikel/322/79243/


Nachricht von Paul Guenther

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Mobilfunkemissionen und Erregbarkeit des menschlichen Gehirns

Reuters

Einer italienischen Studie zufolge sollen Mobiltelefone zwar den Teil der Hirnrinde erregen, der sich am dichtesten am Telefon befindet, aber es sei nicht klar, ob diese Effekte gesundheitsgefährdend seien. Dr. Paolo Rossini vom Fatebenefratelli Hospital in Mailand und seine Kollegen untersuchten mithilfe der Transkranialen Magnetischen Stimulation (TMS) die Gehirnfunktionen von Menschen während des Telefonierens mit Mobiltelefonen. Untersucht wurden 15 junge männliche Freiwillige, die für 45 Minuten ein GSM 900 Mobiltelefon nutzten. Bei 12 der 15 untersuchten Personen zeigten die Zellen in der motorischen Rinde neben dem Mobiltelefon Erregbarkeit während des Gebrauchs, normalisierten sich aber innerhalb einer Stunde wieder. Die Forscher betonten, sie hätten nicht nachgewiesen, dass die Benutzung eines Mobiltelefons in irgendeiner Weise schädlich für das Gehirn sei, dass aber Personen mit Voraussetzungen wie zum Beispiel Epilepsie, verbunden mit der Erregbarkeit von Hirnzellen, möglicherweise beeinflusst werden könnten. Bibliografische Informationen: "Mobile phone emissions and human brain excitability." Ferreri et al., Annals of Neurology; July 2006; (DOI: 10.1002/ana.20906, Abstract
http://www3.interscience.wiley.com/cgi-bin/abstract/112660876/ABSTRACT
http://today.reuters.co.uk/news/newsArticle.aspx?type=technologyNews&storyID=2006-06-26T043027Z_01_N25386340_RTRIDST_0_TECH-CELLPHONES-DC.XML
http://www.foodconsumer.org/777/8/Cell_Phones_Found_to_Activate_Brain_Areas.shtml
http://www.sueddeutsche.de/computer/artikel/322/79243/

Omega zu den Schlussfolgerungen dieser Studie und deren Objektivität muss man wissen, dass diese Studie teilweise von der Telecom Italia Mobile (Projekt EC7305) gesponsert wurde.

Aus: FGF-Infoline vom 29.06.2006

Der Forschungsgemeinschaft Funk e.V. (FGF), gehören alle deutschen Mobilfunkbetreiber an.

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Mobile phone emissions and human brain excitability
http://omega.twoday.net/stories/2239017/

http://www.buergerwelle.de/pdf/clinical_and_physiological_investigations_of_people_highly_exposed_to_electromagnetic_fields.pdf


Informant: Martin Weatherall

http://www.buergerwelle.de/pdf/review_of_icnirp_emf_exposure_guidelines.htm

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I sent the following email on June 28, 2006

Martin Blank

To: Mrs. Gunde Ziegelberger (ICNIRP)
Re: June 27 e-mail of Mr Hans Karow on ICNIRP EMF exposure guidelines

I am writing in support of Mr Hans Karow’s request regarding information about ICNIRP EMF exposure guidelines. Since these guidelines are meant to reflect the latest and best available information regarding the biological effects of EMF exposure, I think ICNIRP should be made aware of scientific developments reported and discussed at the annual meeting of the Bioelectromagnetics Society, held in Cancun earlier this month. A symposium, entitled ‘Scientific Perspective on Electromagnetic Fields and the Precautionary Principle’, was devoted to the scientific basis of EMF safety standards. The formal discussion on the scientific issues went on long past the designated closing time, and was continued in a special discussion session on the following day. To insure that the scientific issues continue to be explored and eventually resolved, the issues were referred by the President to the Public Affairs Committee of the Society, and instructed to meet regularly. A major point of discussion was based on the distinction between epidemiology studies that provide information about the probability of risk and laboratory research that provides scientifically verifiable information.

The latest laboratory research points to serious inadequacies in the safety standards recommended by ICNIRP and IEEE committees. In particular, stimulation of the stress response by ELF and RF frequencies indicates:

• EM fields probably cause molecular (e.g., DNA) damage in both frequency ranges.

• protective biological processes are activated in cells by non-thermal mechanisms.

• the same cellular processes are evoked by many parts of the EM spectrum.

The measured ELF thresholds to EM fields are low, both in terms of field strength and exposure duration, and there is great variability in the sensitivity of biological systems. We know that physiological systems have many protective mechanisms (e.g., homeostasis, repair mechanisms, apoptosis) that tend to mitigate the potentially harmful effects of the EM fields, but cannot always cope. Because of the wide range of biological systems affected, the wide range of frequencies that are biologically active, the low response thresholds and the possibility of cumulative effects by repetitive stimulation, the exposure standards should be revised to take into account:

• the importance of non-thermal mechanisms in assessing risk.

• total cumulative exposure across the different divisions of the EM spectrum.

• the increasing EM field background due to proliferation of electronic devices.

• the most sensitive populations (usually children).

I trust that you will bring this letter to the attention of ICNIRP, since I believe that ICNIRP would want to base its recommendations on all available information. I also hope that you will act favorably on Mr Karow’s request for information.

Sincerely yours,

Martin Blank,
PhD Associate Professor of Physiology and Cellular Biophysics
Bioelectromagnetics Society President, 1997-1998

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Dr. Martin Blank Ph.D.
Associate Professor of Cellular Biophysics
http://www.zoominfo.com/Search/ReferencesView.aspx?PersonID=1733764

On ICNIRP EMF exposure guidelines
http://omega.twoday.net/stories/2289938/

ICNIRP EMF exposure guidelines to be revised
http://freepage.twoday.net/stories/1822415/

Base Stations, operating within strict national and international Guidelines, do not present a Health Risk?
http://omega.twoday.net/stories/771911/

Canadian Cancer Society advises on EMFs
http://omega.twoday.net/stories/2274828/

‘The fight goes on’
http://omega.twoday.net/stories/2272126/



http://omega.twoday.net/search?q=Ziegelberger
http://freepage.twoday.net/search?q=Ziegelberger
http://omega.twoday.net/search?q=ICNIRP
http://freepage.twoday.net/search?q=ICNIRP
http://omega.twoday.net/search?q=Gunde

Cell phone emissions excite the brain cortex

Public release date: 26-Jun-2006

Contact: Amy Molnar amolnar@wiley.com
John Wiley & Sons, Inc.

Findings may have implications for patients with some neurological conditions Electromagnetic fields from cell phones excite the brain cortex adjacent to it, with potential implications for individuals with epilepsy, or other neurological conditions. This finding is published in Annals of Neurology, a journal by John Wiley & Sons. The article is also available online via Wiley Interscience
http://www.interscience.wiley.com/journal/ana .

More than 500 million people in the world use cell phones which emit electromagnetic fields (EMFs). Though many studies have looked at the effects of EMFs on the body, few have focused on their effects on the brain. Such effects could be harmful, neutral, or beneficial and might be particularly important for individuals with conditions involving cortical excitability, such as epilepsy.

Researchers in Italy, led by Paolo M. Rossini, M.D., Ph.D. of Fatebenefratelli, used Transcranial Magnetic Stimulation (TMS) to investigate brain function under exposure to electromagnetic fields from a common type of cell phone. Their study reports the effects of EMF exposure on brain physiology for the first time.

The researchers developed a double-blind study in which 15 young male volunteers were exposed to EMF signals from a GSM 900 cell phone for 45 minutes. They measured Motor Evoked Potentials (MEPs) during motor cortex TMS before, and immediately after EMF exposure, and also one hour later.

In 12 of the 15 subjects, the data showed an excitability change in the motor cortex adjacent to the cell phone. "Intracortical excitability was significantly modified, short intracortical inhibition was reduced and facilitation enhanced," the authors report. They found that the effects of the EMF were transient and the subjects' brains tended to return toward baseline conditions one hour after the exposure.

It would be premature to presume that this work implies that using a cell phone is bad for the brain in any way. Much more work needs to be done to understand whether these electrical changes in the brain make any difference whatsoever in the way we think or in any disease process in which cortical excitability is affected.

"It should be argued that long-lasting and repeated exposure to EMFs linked with intense use of cellular phones in daily life might be harmful or beneficial in brain-diseased subjects," they conclude. "Further studies are needed to better circumstantiate these conditions and to provide safe rules for the use of this increasingly more widespread device."


Article: "Mobile phone emissions and human brain excitability." Ferreri, Florinda; Curcio, Giuseppe; Pasqualetti, Patrizio; De Gennaro, Luigi; Fini, Rita; Rossini, Paolo. Annals of Neurology; July 2006; (DOI: 10.1002/ana.20906).

http://www.eurekalert.org/pub_releases/2006-06/jws-cpe061906.php
http://en.chinabroadcast.cn/2906/2006/06/26/45@106970.htm

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Cell Phones Found to Activate Brain Areas
http://www.forbes.com/forbeslife/health/feeds/hscout/2006/06/26/hscout533445.html

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Cell phone signals excite brain

The weblog version of this message is at:
http://www.emfacts.com/weblog/index.php?p=499

Following on from the last message (#498) about the research by Professor Con Stough, from the Brain Sciences Institute at Melbourne’s Swinburne University, below is the latest from Italy, also finding an effect on brain function from cell phone use. This time finding that microwaves excite part of the brain but the researchers are hesitant to call this is an adverse effect. Such hesitancy is understandable as the cell phone industry is now the major funder of cell phone research. Say you found an adverse effect and watch your future funding dry up faster than a rain drop in the Sahara. Conversely, to suggest that there may be a beneficial effect is like money in the bank. The Dutch Health Council knows how it works.

Is there any evidence that artifically exciting the brain may have long tern adverse health effects?

One does not have to look far to find ample evidence that artifically stimulating the brain can have long term health consequences. Take methamphetamine (”speed”) for example. Quite effective in cranking up the brain but the brain quickly becomes addicted to the extra buzz with disasterous long tern effects. A common fact with taking stimulates (ahhh coffee!) is that they can become addictive. So if research shows cell phone use to have a stimulant effect on the brain perhaps there is an addictive effect as well?

A case in point from my files is that of a woman in Melbourne who first noticed headaches after purchasing her first GSM cell phone. The headaches became progressively worse and debilitating so she had to consult with her GP and a specialist who sent her off for a series of brain scans for a possible brain tumour. No tumour was found but the meninges layer under the scull at the position beneath where the phone was held was clearly inflamed as seen on the scans. Her GP then wrote to Telstra with a request to release the woman from her contract as her cell phone use was the most likely cause of the inflamination and headaches. The woman ceased using her cell phone but reported having withdraw like symptoms for some weeks afterwords.

Don Maisch


From Robert Riedlinger:

Cell phone signals excite brain, study finds

Mon Jun 26, 2006 12:30am ET

WASHINGTON (Reuters) - Cell phone emissions excite the part of the brain cortex nearest to the phone, but it is not clear if these effects are harmful, Italian researchers reported on Monday.

Their study, published in the Annals of Neurology, adds to a growing body of research about mobile phones, their possible effects on the brain, and whether there is any link to cancer.

About 730 million cell phones are expected to be sold this year, according to industry estimates, and nearly 2 billion people around the world already use them.

Of these, more than 500 million use a type that emits electromagnetic fields known as Global System for Mobile communications or GSM radio phones. Their possible effects on the brain are controversial and not well understood.

Dr. Paolo Rossini of Fatebenefratelli hospital in Milan and colleagues used Transcranial Magnetic Stimulation or TMS to check brain function while people used these phones.

They had 15 young male volunteers use a GSM 900 cell phone for 45 minutes. In 12 of the 15, the cells in the motor cortex adjacent to the cell phone showed excitability during phone use but returned to normal within an hour.

The cortex is the outside layer of the brain and the motor cortex is known as the “excitable area” because magnetic stimulation has been shown to cause a muscle twitch.

The researchers stressed that they had not shown that using a cell phone is bad for the brain in any way, but people with conditions such as epilepsy, linked with brain cell excitability, could potentially be affected.

“It should be argued that long-lasting and repeated exposure to EMFs (electromagnetic frequencies) linked with intense use of cellular phones in daily life might be harmful or beneficial in brain-diseased subjects,” they wrote “Further studies are needed to better circumstantiate these conditions and to provide safe rules for the use of this increasingly more widespread device.”

Medical studies on cell phone use have provided mixed results. Swedish researchers found last year that using cell phones over time can raise the risk of brain tumors. But a study by Japan’s four mobile telephone operators found no evidence that radio waves from the phones harmed cells or DNA.

The Dutch Health Council analyzed several studies and found no evidence that radiation from mobile phones was harmful.

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Mobile Phones Excite the Human Brain - Study
http://www.cellular-news.com/story/17991.php

Cellular phones do affect brain cells, finds study
http://www.earthtimes.org/articles/show/7354.html

How mobile phones excite for your brain
http://english.pravda.ru/news/science/29-06-2006/82668-mobile-0

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Cell phone signals impact brain physiology
http://www.newstarget.com/019467.html

See above link to short cell phone and brain physiology. It looks like the only article on the site regarding this technology.

Angie


From Mast Sanity/Mast Network

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The Spin Begins: Reporting the Italian cell phone study

Iris Atzmon send this story on. Note where the Italian researchers apparently suggest cell phone use “could possibly help if you suffer from migraines or other neurological disorders”. Helpful news for people troubled by headaches after using the cell phone. Why such bizarre statements from researchers who should know better? Don’t they read the relevant literature? I’m sure the Russian RNCNIRP and their Academy of Sciences will have a laugh at this one. They specifically advise that people with neurological conditions should NOT use a cell phone.

Why make such dismissive statements that are a godsend for the cell phone industry’s media spin doctors? Perhaps someone should inquire as to who funded this study……

However, note J. Fellows and E. John’s warnings about implications for children using cell phones at the end. Disney and Motorola take note….

Don Maisch

Read further under: http://www.emfacts.com/weblog/index.php?p=503

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Funding the Italian cell phone study

From David Bücher [re: last message]

Dear Don,

“Perhaps someone should inquire as to who funded this study……”

Easily done, see
http://www3.interscience.wiley.com/cgi-bin/abstract/112660876/ABSTRACT

The Acknowledgements section from the full text article:

“The research was granted by Telecom Italia Mobile (project EC7305) and Associazione Fatebenefratelli per la Ricerca.

We thank E. Fusco and G. Pietrobono for their help with the experiments and Eng. D. Ponzo for technical support. We also thank Motorola GmbH, Corporate Technology, Niederkassel-Mondorf (Germany) for supplying the equipment. SAR and field measurements were performed by the Bioelectromagnetic Group at the Department of Electronic Engineering (University of Rome La Sapienza) and by the Section of Environmental Toxicology and Biomedical Sciences, Laboratory of Bioelectromagnetism (ENEA Casaccia, Rome).”

Best regards,

David Bücher

http://www.emfacts.com/weblog/index.php?p=504

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Cell phones change the brain Therapeutics Daily

(subscription) (press release) - Newtown, PA, USA ... The researchers, from Fatebenefratelli Hospital in Rome, found that the electromagnetic field (EMF) emitted by cell phones can cause some cells in the brain's ...
http://www.therapeuticsdaily.com/news/article.cfm?contenttype=sentryarticle&contentvalue=985106&channelID=26

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Mobile phone radiation excites brain cortex
http://www.mtbeurope.info/news/2006/607001.htm

Dr George Carlo: Portables en accusation
http://omega.twoday.net/stories/2302196/



http://omega.twoday.net/search?q=brain+tumour

http://vorort.bund.net/rheinland-pfalz/publikationen/publikationen_31/files/3142_5_zimmer_grenzwert.pdf

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Grenzwerte und Mobilfunk
http://omega.twoday.net/stories/242821/

1: J Expo Sci Environ Epidemiol. 2006 Jun 14; [Epub ahead of print]

Vrijheid M, Deltour I, Krewski D, Sanchez M, Cardis E.

International Agency for Research on Cancer, Lyon, France.

This paper examines the effects of systematic and random errors in recall and of selection bias in case-control studies of mobile phone use and cancer. These sensitivity analyses are based on Monte-Carlo computer simulations and were carried out within the INTERPHONE Study, an international collaborative case-control study in 13 countries. Recall error scenarios simulated plausible values of random and systematic, non-differential and differential recall errors in amount of mobile phone use reported by study subjects. Plausible values for the recall error were obtained from validation studies. Selection bias scenarios assumed varying selection probabilities for cases and controls, mobile phone users, and non-users. Where possible these selection probabilities were based on existing information from non-respondents in INTERPHONE. Simulations used exposure distributions based on existing INTERPHONE data and assumed varying levels of the true risk of brain cancer related to mobile phone use. Results suggest that random recall errors of plausible levels can lead to a large underestimation in the risk of brain cancer associated with mobile phone use. Random errors were found to have larger impact than plausible systematic errors. Differential errors in recall had very little additional impact in the presence of large random errors. Selection bias resulting from underselection of unexposed controls led to J-shaped exposure-response patterns, with risk apparently decreasing at low to moderate exposure levels. The present results, in conjunction with those of the validation studies conducted within the INTERPHONE study, will play an important role in the interpretation of existing and future case-control studies of mobile phone use and cancer risk, including the INTERPHONE study.Journal of Exposure Science and Environmental Epidemiology advance online publication, 14 June 2006; doi:10.1038/sj.jes.7500509.

PMID: 16773122 [PubMed - as supplied by publisher]

http://tinyurl.com/lklkv

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Do I read this right:

"Results suggest that random recall errors of plausible levels can lead to a large underestimation in the risk of brain cancer associated with mobile phone use."

Isn't that exactly what we were told by Hepworth, Shoemaker ... Swerdlow et al., "Mobile phone use and risk of glioma in adults: case-control study"?:

"The complementary positive and negative risks associated with ipsilateral and contralateral use of the phone in relation to the side of the tumour might be due to recall bias."
http://press.psprings.co.uk/bmj/january/glioma.pdf

Omega see also "Mobile phone use and risk of glioma in adults" under: http://omega.twoday.net/stories/1439856/

Hmmm.

Andy


From Mast Sanity/Mast Network

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INTERPHONE

One remark on the Interphone: Choosing the biased definition of regular user in the INTERPHONE is not a "Random error" at all. It is made with an intention. Why don't researchers of tobacco define someone who smokes 1 cigarette a week as "a regular smoker"? Because they are not ready to make a fool of themselves when writing in the conclusions that "regular smokers" didn't have an increased risk for lung cancer. People laugh very loud when I tell them about the definition of the regular user in the INTERPHONE. They immediately get the point and the purpose of the study. I am talking about non- scientific people. It is misleading and not honest to use this definion and then to write at the conclusions (like in the Interphone german study for example) that there was no increased risk for regular users, while the definition itself does not represent regular users at all. Hardell's study is several levels above the INTERPHONE study because Hardell's research is scientific, whereas the INTERPHONE is a political study. After I saw IARC'S Philip Autier saying that dioxin is not carcinogenic for humans while it is on the IARC list of known carcinogens from 1997, I have to think - something is very rotten at IARC and you'd bettter believe it.

Iris Atzmon

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http://omega.twoday.net/search?q=brain+cancer
http://omega.twoday.net/search?q=cancer+risk

http://tinyurl.com/zyxeg

Illnesses caused by microwave sickness around the world
http://omega.twoday.net/stories/541750/

WHO: a lot of people report symptoms of electromagnetic radiation sickness
http://omega.twoday.net/stories/958459/

Electromagnetic hypersensitivity (EHS) and subjective health complaints associated with electromagnetic fields of mobile phone communication - a literature review published between 2000 and 2004
http://omega.twoday.net/stories/877548/

Electrical Pollution & Brain Tumors
http://omega.twoday.net/stories/863141/

Personal Stories and Symptoms
http://omega.twoday.net/stories/460078/

Man turns the Earth into a Microwave–Oven
http://omega.twoday.net/stories/189645/

Dienstag, 27. Juni, 19.00 Uhr / Ev. Studierendengemeinde, von-Bar-Str. 2-4, Göttingen

Diskussionsforum

Prof. Dr. Rainer Frenzel-Beyme (Umweltmediziner, Uni Bremen) zum Thema:
"Störungen des zentralen Nervensystems durch Mobilfunk"

Inhalt:

Neben der bisher diskutierten biologischen Wirkung hochfrequenter elektromagnetischer Felder auf Zellfunktionen und mögliche gentoxische Effekte rücken die zentralnervösen Störungen in den Vordergrund, seitdem die bisher unterschätzten Belastungen für Kinder und Jugendliche stärker beachtet werden.

Aus kasuistischen Berichten und anschließend an skandinavische und niederländische experimentelle Befunde bei Wirbeltieren und Menschen verdichten sich konsistente Hinweise auf unmittelbare Effekte niedriger Strahlunhgsintensitäten auf morphologische und funktionelle Veränderungen, auch wenn subjektiv noch keine Krankheitssymptome bestehen. Wegen zu befürchtender Langzeitwirkungen, die erst nach langer Nutzung der Mobilfunktechnologie auftreten, muss diesen Befunden verstärkte Aufmerksamkeit gewidmet werden.

Wie epidemiologische Studien zum Hirntumorrisko ergeben haben, sind die statistisch gesicherten Risikoanstiege erst nach über 10-jähriger Beobachtungsdauer zu erkennen, dann aber konsistent gefunden worden.

Die erkennbare Tendenz, einschlägige Ergebnisse als zufällige Ereignisse abzutun und weitere Studien oder Replikationen der Forschung zu fordern, geht an dem Sachverhalt vorbei, dass für Prävention schon ausreichend Evidenz dafür vorliegt, auch gering dosierte EMF/Radiofrequenz nicht länger zu verharmlosen.

Veranstalter: ESG
Verein für Friedens- und Konfliktforschung Göttingen
http://www.vuk-goettingen.de/frm_set2.htm


Nachricht von Helmut Breunig

http://vorort.bund.net/rheinland-pfalz/publikationen/publikationen_31/files/6498_mayer_rimbachstudie_mainz_2006.pdf


Nachricht von Helmut Breunig

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Von jedem ein großes Blutbild: Bürgerinitiative will Auswirkungen von Mobilfunk nachweisen
http://omega.twoday.net/stories/2223880/

Rimbach: Blutproben statt Protestschreiben
http://omega.twoday.net/stories/155355/

Blutuntersuchungen wegen Mobilfunk
http://omega.twoday.net/stories/407977/

BLUTUNTERSUCHUNG SOLL KLARHEIT BRINGEN
http://omega.twoday.net/stories/407972/