Dr Kjell Hansson Mild in Sweden studied radiation risk in
11,000 mobile telephone users. Symptoms such as fatigue,
headaches, burning sensations on the skin were more common
among those who made longer mobile phone calls. At the same
time there are a growing number of unconfirmed reports of
individuals whose health has been affected after chronic,
frequent use of mobile phones, presumably from radiation
effects on cells. See below for SAR data on mobile phone
radiation levels. Once again, for every study with a
positive finding of effect on cells, there is another that
has found nothing.
As I say, from a physician's point of view this is all
rather difficult to interpret. The truth is that no one
knows for sure, but it looks as though the health risks for
an individual person with normal patterns of use are
extremely low, almost non-existent. I still use a mobile
phone, as do our teenage children, and my home has a
wireless network as well as hands-free local handsets for
landlines. The only steps we have taken are to mount the
wireless LAN connection a few feet from where anyone sits,
and to encourage our younger children not to spend their
entire lives chatting away on mobiles - there are other
reasons for that too such as homework and of course cost.
As long ago as June 1998 the Lancet reported that radiation
from mobiles caused an increase of blood pressure. Dr Braune
and colleagues in Freiburg, Germany, attached mobiles to the
right side of the heads of ten volunteers. The phones were
switched on and off by remote control without the volunteers
knowing - so that any radiation effect could be separated
from the psychological effect of holding a mobile phone.
Their blood pressure rose each time by between 5-10mm Hg,
probably from an electromagnetic radiation induced
constrictive effect on blood vessels from the mobile phones.
This level of increase would be more than enough to trigger
a stroke or heart attack in someone at severe risk, but is
harmless in the vast majority of people. This was the first
firm evidence that mobile phone radiation could directly
alter cell function in the human body. But what about longer
term radiation effects of using mobile phones? Could mobile
phone exposure trigger cancer? Birth defects? What about the
health risks not just from mobile phones but the transmitter
masts?
This work on human subjects follows other ealier mobile
phone studies in animals suggesting that electromagnetic
radiation from mobiles may cause brain tumours, cancer,
anxiety, memory loss and serious birth defects. But
different studies have contradicted many of these findings.
As in so much of cutting edge science, there are real
uncertainties about mobile phone radiation. Remember it has
taken 30 years to work out the side-effects of oral
contraceptives and even that is still debated. Here are some
of the more negative reports.
Savannah, Georgia
Denmark, Copenhagen
Fremantle, Victoria
Switzerland, Bern
Hampton, Virginia
Norway, Oslo
Fort Collins, Colorado
Overland Park, Kansas
Germany, Berlin
Geraldton Victoria Australia
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