Cell Phone
Exposure Increases Brain Cell Activity Part 1
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The radiation emitted after just 50 minutes on a mobile
phone increases the activity in brain cells, according to a
new government-funded study. The effects of that brain
activity are not known, said the researchers, who called for
more study.
Phones that were turned off did not create the same brain
activity.
The small study, published in the Journal of American
Medical Association, is the first to look specifically at
how electromagnetic radiation from cell phones affects
glucose metabolism, a normal function, in the brain.
“When glucose metabolism goes up, it activates cells. The
findings are an indication that exposure to cell phones
activate the brain much more easily than we previously
thought,” said Dr. Nora Volkow, National Institutes of
Health neuroscientist and lead study author.
Brain activity means that the cells are using glucose to
create energy. The brain normally produces the amount of
glucose it needs to function properly. But these new
findings don’t tell us whether activating the cells
artificially, in this case by cell phone radiation, will
have a negative effect on health. Volkow says she simply
doesn’t know and calls for further investigation.
The CTIA, the wireless industry trade group, noted that no
research has found cell phones to be a danger to health.“The
peer-reviewed scientific evidence has overwhelmingly
indicated that wireless devices, within the limits
established by the FCC, do not pose a public health risk or
cause any adverse health effects,” said a statement from
John Walls, the group’s vice president for public affairs.
“In May 2010, the Interphone project, coordinated by the
International Agency for Research on Cancer, which was the
largest study of cell phone use and brain tumors ever
undertaken and included substantial numbers of subjects
using cell phones for ten years or longer, found that
‘overall, no increase in risk was observed with the use of
mobile phones.’ ”
The study was praised as offering “an important insight into
potential effects of cell phone radiation on the human
brain” by Renee Sharp, director of the Environmental Working
Group California office. “It joins the growing list of
studies that have raised concerns about cell phone use and
the brain.”
Researchers measured brain activity of 47 healthy adults — a
small but scientifically valid size group for this type of
study — while using a mobile device. The levels were tested
when the phone was in use (transmitting radiation) against
the head and when against the head but in the off position.
Compared with subjects whose phones were turned off, the
group whose phones were on had “significantly higher” brain
activity in the area closest to the telephone antenna.
The findings of the study, which examined the subjects
during just one 50-minute exposure, raise a key question,
the researchers said: What, if any, are the long-term
consequences of repeated increased brain activity due to
exposure to cell phone radiation?
We need to rule out that there is a not long-lasting effect
in healthy people,” Volkow said. “We don’t know what
repeated exposure and artificial activation of the glucose
will have on the brain.”
Cell Phone Exposure Increases Brain
Cell Activity Part 2
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