Wissenschaft zu Mobilfunk

12
Mrz
2009

Epidemiological evidence for an association between use of wireless phones and tumor diseases

Pathophysiology. 2009 Mar 4. [Epub ahead of print]

Hardell L, Carlberg M, Hansson Mild K.

Department of Oncology, University Hospital, SE-701 85 Orebro, Sweden.

During recent years there has been increasing public concern on potential cancer risks from microwave emissions from wireless phones. We evaluated the scientific evidence for long-term mobile phone use and the association with certain tumors in case-control studies, mostly from the Hardell group in Sweden and the Interphone study group. Regarding brain tumors the meta-analysis yielded for glioma odds ratio (OR)=1.0, 95% confidence interval (CI)=0.9-1.1. OR increased to 1.3, 95% CI=1.1-1.6 with 10 year latency period, with highest risk for ipsilateral exposure (same side as the tumor localisation), OR=1.9, 95% CI=1.4-2.4, lower for contralateral exposure (opposite side) OR=1.2, 95% CI=0.9-1.7. Regarding acoustic neuroma OR=1.0, 95% CI=0.8-1.1 was calculated increasing to OR=1.3, 95% CI=0.97-1.9 with 10 year latency period. For ipsilateral exposure OR=1.6, 95% CI=1.1-2.4, and for contralateral exposure OR=1.2, 95% CI=0.8-1.9 were found. Regarding meningioma no consistent pattern of an increased risk was found. Concerning age, highest risk was found in the age group <20 years at time of first use of wireless phones in the studies from the Hardell group. For salivary gland tumors, non-Hodgkin lymphoma and testicular cancer no consistent pattern of an association with use of wireless phones was found. One study on uveal melanoma yielded for probable/certain mobile phone use OR=4.2, 95% CI=1.2-14.5. One study on intratemporal facial nerve tumor was not possible to evaluate due to methodological shortcomings. In summary our review yielded a consistent pattern of an increased risk for glioma and acoustic neuroma after >10 year mobile phone use. We conclude that current standard for exposure to microwaves during mobile phone use is not safe for long-term exposure and needs to be revised.

http://www.ncbi.nlm.nih.gov/sites/entrez/19268551


Informant: Martin Weatherall



http://omega.twoday.net/search?q=tumor
http://omega.twoday.net/search?q=cancer
http://omega.twoday.net/search?q=salivary+gland+tumor
http://omega.twoday.net/search?q=glioma
http://omega.twoday.net/search?q=melanoma
http://omega.twoday.net/search?q=lymphoma
http://omega.twoday.net/search?q=microwave+emissions
http://omega.twoday.net/search?q=exposure+standard
http://omega.twoday.net/search?q=Interphone
http://omega.twoday.net/search?q=Hardell
http://omega.twoday.net/search?q=Carlberg
http://omega.twoday.net/search?q=Hansson+Mild

11
Mrz
2009

9
Mrz
2009

Cell Phone Link to Tumors? “We Don’t Know”

http://www.microwavenews.com/Armstrong.html



http://omega.twoday.net/search?q=brain+tumor
http://omega.twoday.net/search?q=DNA+breaks
http://omega.twoday.net/search?q=Interphone
http://omega.twoday.net/search?q=ICNIRP
http://omega.twoday.net/search?q=WHO+EMF+Project
http://omega.twoday.net/search?q=Bruce+Armstrong
http://omega.twoday.net/search?q=Louis+Slesin

Radiofrequency Exposure Near High-voltage Lines

From: Magda Havas
Sent: Sunday, March 08, 2009 1:02 PM
Subject: important paper by Vignati and Giuliani

Although this paper by Vignati and Giuliani was published in 1997, it is well worth reading as some of you may have missed it when it came out (see abstract below).

This paper documents radio frequencies flowing along power lines, something we are concerned about for a variety of reasons including the move to broadband over power lines (BPL). The RF can radiate from the wires inside buildings and thus expose occupants to RFR and not just ELF. The frequencies measured in this paper are in the kHz range.

While these frequencies may be placed on the wire deliberately, they may also occur because of improper filtering at the source of origin.

A few years ago, Dave Stetzer and I were invite to Bermuda to teach some people on the island how to measure dirty electricity, RFR, ground current, and ELF EMFs. ?While we were there, Dave was sitting on a chair near a bronze lamp in my room at the guest house, where we were staying, and he began to feel ill. Dave has become sensitive to EM radiation.

We began to measure the source of exposure and found that it was coming from an antenna several km away. However, he felt worse near the lamp. We measured the radiation in the room and found that it was coming in on the electrical wires in the wall and flowing along the wire to the nearby lamp. When we unplugged the lamp Dave felt slightly better. Dave took out his scopemeter and measured 104 MHz, which is an FM radio station. Presumably the radio station didn't have appropriate filters to isolate the RF from the electrical wires.

Some of the RF we are exposed to inside buildings is coming through the air but some of it is radiating from electrical wires as Vignati and Giuliani document below. This complicates our exposure and hence our understanding of which frequencies are biologically active in epidemiological studies of both occupational and residential exposure. The move to BPL will increase our exposure to these frequencies and a lot more people are likely to become ill as a results.

-magda

p.s. I am attaching a copy of the paper.



Vignati, M. and L. Giuliani, 1997. Radiofrequency exposure near high-voltage lines. Environ Health Perspect 105 (Suppl 6):1569-1573 (1997).

Abstract Many epidemiologic studies suggest a relationship between incidence of diseases like cancer and leukemia and exposure to 50/60 Hz magnetic fields. Some studies suggest a relationship between leukemia incidence in populations residing near high-voltage lines and the distance to these lines. Other epidemiologic studies suggest a relationship between leukemia incidence and exposure to 50/60 Hz magnetic fields (measured or estimated) and distance from the main system (220 or 120 V). The present work does not question these results but is intended to draw attention to a possible concurrent cause that might also increase the incidence of this disease; the presence on an electric grid of radiofrequency currents used for communications and remote control. These currents have been detected on high- and medium-voltage lines. In some cases they are even used on the main system for remote reading of electric meters. This implies that radiofrequency (RF) magnetic fields are present near the electric network in addition to the 50/60 Hz fields. The intensity of these RF fields is low but the intensity of currents induced in the human body by exposure to magnetic fields increases with frequency. Because scientific research has not yet clarified whether the risk is related to the value of magnetic induction or to the currents this kind of exposure produces in the human body, it is reasonable to suggest that the presence of the RF magnetic fields must be considered in the context of epidemiologic studies.

Radio Frequency Exposure Near High-Voltage Lines
Dr. Magda Havas, B.Sc. Ph.D.
Environmental & Resource Studies,
Trent University, Peterborough, Ontario, Canada, K9J 7B8
phone:705 748-1011 x 7882
fax: 705 748-1569

mhavas@trentu.ca


Informant: Martin Weatherall



The importance of transient electric and magnetic fields
http://omega.twoday.net/stories/5567018/



http://omega.twoday.net/search?q=cancer
http://omega.twoday.net/search?q=leukemia
http://omega.twoday.net/search?q=radiofrequency+exposure
http://omega.twoday.net/search?q=magnetic+field
http://omega.twoday.net/search?q=high-voltage+lines
http://omega.twoday.net/topics/Power+Lines/
http://omega.twoday.net/search?q=dirty+electricity
http://omega.twoday.net/search?q=Sam+Milham
http://omega.twoday.net/search?q=Lloyd+Morgan
http://omega.twoday.net/search?q=Magda+Havas

8
Mrz
2009

4
Mrz
2009

2
Mrz
2009

900 megahertz electromagnetic field exposure affects qualitative and quantitative features of hippocampal pyramidal cells in the adult female rat

Brain Res. 2009 Feb 18. [Epub ahead of print]

Bas O, Odaci E, Kaplan S, Acer N, Ucok K, Colakoglu S.

Department of Anatomy, Rize University School of Medicine, Rize, Turkey.

The effects of electromagnetic fields (EMFs) emitted by mobile phones on humans hold special interest due to their use in close proximity to the brain. The current study investigated the number of pyramidal cells in the cornu ammonis (CA) of the 16-week-old female rat hippocampus following postnatal exposure to a 900 megahertz (MHz) EMF. In this study were three groups of 6 rats: control (Cont), sham exposed (Sham), and EMF exposed (EMF). EMF group rats were exposed to 900 MHz EMF (1 h/day for 28 days) in an exposure tube. Sham group was placed in the exposure tube but not exposed to EMF (1 h/day for 28 days). Cont group was not placed into the exposure tube nor were they exposed to EMF during the study period. In EMF group rats, the specific energy absorption rate (SAR) varied between 0.016 (whole body) and 2 W/kg (locally in the head). All of the rats were sacrificed at the end of the experiment and the number of pyramidal cells in the CA was estimated using the optical fractionator technique. Histopathological evaluations were made on sections of the CA region of the hippocampus. Results showed that postnatal EMF exposure caused a significant decrease of the pyramidal cell number in the CA of the EMF group (P< 0.05). Additionally, cell loss can be seen in the CA region EMF group even at qualitative observation. These results may encourage researchers to evaluate the chronic effects of 900 MHz EMF on teenagers' brains.

PMID: 19230827 [PubMed - as supplied by publisher]

http://www.ncbi.nlm.nih.gov/pubmed/19230827?dopt=Abstract



http://omega.twoday.net/search?q=900+MHz
http://omega.twoday.net/search?q=field+exposure
http://omega.twoday.net/search?q=hippocampal
http://omega.twoday.net/search?q=cell+loss

28
Feb
2009

27
Feb
2009

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