Posted by:

Dr. Mercola

November 29 2010 

Holding a cell
phone against your ear, or putting it in your pocket, may be hazardous
to your health – or so says the fine print on a little slip that you
probably tossed aside when unpacking your phone.

Apple says your iPhone should come no closer than 5/8 of an inch; BlackBerry recommends about an inch.

Statistics show that, over all, there has not been a general increase
in the incidence of brain since arrived – but the
average hides that fact that brain cancer has increased in the 20-to-29
age group while dropping for the older population.

According to the New York Times:

"The largest study of cell phone use and brain cancer has been
the Interphone International Case Control Study … The authors included
some disturbing data in an appendix available only online. These showed
that subjects who used a cell phone 10 or more years doubled the risk
of developing brain gliomas, a type of ."

Meanwhile, the Wall Street Journal investigates various
methods of cutting down the radiation your cell phone produces. However,
they say the most effective one may be the simplest — keep the phone
away from your head and body.


Good Health Nov 15 2010

Dr. Mercola’s Comments:

This summer I purchased the Sprint EVO, which is one of the top
phones, and I can tell you that it is clearly my favorite
gadget. In my opinion, it is far better than any navigation device on
ANY car and has loads of other useful tools. More than two-thirds of the
time I don’t use the phone for calls but when I do it is nearly always
in mode and I rarely ever hold the device or put it to my head.

We have had an exponential growth rate of cell phones and their numbers will continue to grow as the market expands.

As the New York Times reported, there are 292 million
wireless numbers in use in the United States, which is close to one for
every man, woman and child. And as of June about 25 percent of U.S.
households had given up their landlines in favor of going wireless-only.

For many, NOT having a cell phone is viewed as virtually impossible.
Today’s cell phones are much more than phones. They can also be your
camera, video recorder, hand-held computer, and your lifeline to staying
in touch with your work and family.

Indeed, cell phones are extremely convenient and useful, and from a
technology standpoint have changed the way humans interact and do
business … they’re an incredible invention, really … except for one
nagging problem.

They’re likely going to trigger a brain cancer epidemic the likes of which the world has never seen.

Did You Know that Cell Phone Manufacturers Warn You to NOT Hold the Phone to Your Head?

Cell phones are so common nowadays that it may take you a minute to
wrap your head around the fact that studies are showing they may not be
safe. But remember, it wasn’t long ago when doctors gladly endorsed
cigarette companies and smoking was commonplace even in hospitals.

Many are now suggesting that cell phones will be the cigarettes of the 21st century
… and one day we will look back on all the photos of people, including
children, walking around pressing these radiation-releasing devices
directly to our heads and wonder what we were thinking.

But for now most people are in a state of ignorant bliss, assuming
that cell phones must be safe if they’re being used so extensively and
there are no public health warnings about them..

The reality is, however, that even cell phone manufacturers do not
advise using your cell phone the way you probably use it – pressed up
against your ear.

Many cell phones actually contain package inserts that warn you to hold the cell phone away from
your head when in use. Apple recommends keeping your iPhone at least
5/8 of an inch from your head, while BlackBerry recommends about an

Why might these companies be quietly warning you to keep your phone away from your head?

New Research Shows Cell Phones are Dangerous

Devra Davis, PhD, professor, Department of Epidemiology at the
Graduate School of Public Health, University of Pittsburgh has written a
new book — Disconnect — in which she exposes research showing that radiation from cell phones has been linked to:

  • DNA damage
  • Memory loss
  • Alzheimer’s disease
  • Cancer
  • Break down of your brain’s defenses
  • Reduced sperm count

Then there were the results of the massive Interphone study, which
was meant to finally provide definitive evidence on the safety, or lack
thereof, of cell phones. It cost more than $30 million (funded in part
by the mobile phone industry) to carry out, and involved nearly 50
scientists from 13 countries, along with more than 14,000 people.

It turns out that the study was a massive PR campaign by the
telecommunications industry to provide reassurance that cell phones are
safe so they can continue to generate hundreds of billions of dollars of

That is why it is no surprise, now that the data has finally been released, that it turns out the study is seriously flawed.
The study is filled with ludicrous and disturbing findings such as
"heavy users" of cell phones have an approximately doubled risk of
glioma, a life threatening and often-fatal brain tumor, after 10 years
of cell phone use.

You might wonder why this is a ludicrous finding, but you will
instantly understand once you learn that: their definition of a "heavy"
user was someone who used a cell phone about two hours … a month!

What this means is that if you use your cell phone for two hours a
month or more, you may be doubling your risk of a potentially fatal
brain tumor. Use your cell phone significantly more than that, and your
risk is likely much, much higher

This study does absolutely nothing to address the hundreds of
millions of cell phone users who easily have exposure up to FIFTY times

Other studies too, like the review of 11 long-term epidemiologic studies published in the journal Surgical Neurology, have revealed that using a cell phone for 10 or more years increases your risk of developing a brain tumor.

The 2009 special EMF issue of the Journal of Pathophysiology also contains over a dozen different studies on the health effects of wireless technology and electromagnetic fields.

Just Like Cigarettes, It Will be Decades Before the Real Effects Show Up

It is still too soon for most cell phone-induced brain tumors to show up.

Just as people don’t get lung cancer a few weeks or months into their
smoking habit, there is a delayed effect between cell phone usage and
brain tumor development that typically is over 10 to 20 years.

Of course, not everyone who smokes gets lung cancer, and not every
cell phone user will develop brain cancer. There are many variables that
contribute to susceptibility.

For instance, children and teens are among those MOST at risk because
their younger skulls are thinner and their growing brains much more
susceptible to radiation exposure. One study even found that children
and teenagers are five times more likely to get brain cancer if they use cell phones — so why risk it?

SAR Values are Not a Valid Measure of Safety

There’s been a lot of talk lately about cell phones’ SAR values, which is simply a measure of the power of your cell phone and its potential for heating your tissues.

Values vary from one model to the next, starting around 0.2 watts,
but the maximum allowable SAR rate is 1.6 watts per kilogram for phones
sold in the United States. This guideline is based on the exposure from a
six-minute phone call.

Although knowing your phone’s SAR value is a good first step, it is by no means an absolute measure of safety.

As Camilla Rees, of explains:

"The cell phone SAR value does not accurately reflect the
potential for biological harm from the frequencies of the communication,
and, very importantly, there are also some biological effects that have
been shown to be worse at lower SAR values compared to higher SAR
values, such as blood-brain barrier permeability."

So it’s important to realize that you simply cannot rely on the SAR
value alone when gauging cell phone safety. Rather, know that safety is
dependent on how you use your cell phone.

What are the Safest and Most Dangerous Ways to Use a Cell Phone?

The most dangerous manner of use is to place the phone against your head.

The best way to decrease your exposure to radiation is to use either
the speakerphone or a safe headset when speaking on the phone, and to
keep your phone as far away from your body as possible whenever it is
on. You should never carry your phone in your shirt pocket or on your
belt, for example.

San Francisco legislation now actually requires
education about such cell phone risks at the point-of-sale. Educational
materials must "inform customers of actions that can be taken by cell
phone users to minimize exposure to radiation, such as turning off cell
phones when not in use, using a headset or speaker phone and texting."
(Lines 15-17 of the final legislation.)

The Washington Post
also reviewed a few products meant to minimize radiation exposure, such
as a T-shirt and blanket that contain silver fibers to help block cell
phone radiation, which are meant for use by pregnant women. There are
also special cases on the market that contain pieces of gold designed to
pull radiation away from your head and release it from the back of the

These options may help cut back on your exposure, but the simplest
way to really minimize your risk is to keep the phone as far away from
your head and body as possible, as much as possible.

I also recommend that everyone who uses a cell phone follow these commonsense guidelines:

  • Children Should Always Avoid Using Cell Phones:
    Barring a life-threatening emergency, children should not use a cell
    phone, or a wireless device of any type. Children are far more
    vulnerable to cell phone radiation than adults, because of their thinner
    skull bones and other factors.
  • Reduce Your Cell Phone Use: Turn your cell phone off more often. Reserve it for emergencies or important matters.
  • Use a Land Line at Home and at Work: Although
    more and more people are switching to using cell phones as their
    exclusive phone contact, it is a dangerous trend and you can choose to
    opt out of the madness.
  • Reduce or Eliminate Your Use of Other Wireless Devices:
    You would be wise to cut down your use of these devices. Just as with
    cell phones, it is important to ask yourself whether or not you really
    need to use them every single time. Even portable home phones, including
    the older kind that operate at 900 MHz, can be a problem. The lesson
    from the field is that all DECT portable phones are a problem.

    If you do not know if you have a DECT phone (as many are not labeled
    as such), the ONLY way to know for sure is to measure. You can learn
    about measuring instrumentation at

    For "hands free" calls at home, I recommend getting the
    old-fashioned speakerphone (either attached to the phone or separate) or
    using on your computer on speaker mode, which is terrific.

  • Use Your Cell Phone Only Where Reception is Good: The
    weaker the reception, the more power your phone must use to transmit,
    and the more power it uses, the more radiation it emits, and the deeper
    the dangerous radio waves penetrate into your body. Ideally, you should
    only use your phone with full bars and good reception.

    Also seek to avoid carrying your phone on your body as that merely
    maximizes any potential exposure. Ideally put it in your purse or
    carrying bag.

  • Turn Your Cell Phone Off When Not in Use: As long as your cell phone is on, it emits radiation intermittently, even when you are not actually making a call.
  • Keep Your Cell Phone Away From Your Body When it is On: The
    most dangerous place to be, in terms of radiation exposure, is near the
    emitting antenna. You do not want any part of your body near this area
    and proximity is everything. The closer the phone is to your body, the
    worse the exposure — with the exposure falling off dramatically with
    distance. Thus, using the speaker mode, the farther you can keep the
    phone away from your body and still hear the call, the better.
  • Use Safer Headset Technology: Wired headsets
    will certainly allow you to keep the cell phone farther away from your
    body. However, if a wired headset is not well-shielded — and most of
    them are not — the wire itself acts as an antenna attracting ambient
    radio waves and transmitting radiation directly to your brain and your
    body, for example over your heart.

Make sure that the wire used to transmit the signal to your ear is shielded.

The best kind of headset to use is a combination shielded wire and
air-tube headset. These operate like a stethoscope, transmitting the
information to your head as an actual sound wave; although there are
wires that still must be shielded, there is no wire that goes all the
way up to your head.