By Devra Davis, PhD, MPH
“We don’t want to believe that our new toys to which we are so attached—and which bring in enormous profits—could also cause our demise or that of our children. But science is not about belief. Governments’ responsibility to their citizens should not be either.” David Servan-Schreiber, MD, PhD, 1951-2011, preface to Disconnect
When the talented physician-author Servan-Schreiber wrote those prophetic words he was lucky. It had been 18 years since he had been diagnosed with a brain tumor incidental to an MRI. The book describing the anti-cancer program he developed had sold several million copies and may well have extended his life. Most brain tumors remain hidden and are only diagnosed after metastasizing into seizures or strokes. David’s luck ran out last year, when he died of a glioblastoma—spreading malignant tumor of the brain. Was it merely a coincidence that he had used one of his three cellphones held close to his head regularly for more than a decade before developing this fatal brain tumor? The WHO (World Health Organization) thinks not, having recently declared cellphone and other wireless radiation a “possible human carcinogen,” adding them to a list that includes some pesticides, engine exhausts and solvents. While we cannot be certain whether cellphone radiation may have promoted or caused the tumor that took his life, that is a highly plausible explanation.
In America today, about 20 million children under the age of 14 have cellphones, and the CDC reports that one-fifth of all 2 year olds reportedly spend two hours a day in front of a screen. Increasingly, scientists and policy makers in tech-savvy nations like Israel and Finland are concerned that the ways these devices are used imperil the brain. The iPhone plastic baby rattle case protects the phone’s glass screen from cracking when dropped or chomped on by teething inquisitive babies, but does not protect the infant’s young brain from the phone’s pulsed digital microwave radiation.
Cell phones have revolutionized the ability to carry out research and promote public health interventions. But, there’s growing recognition in technologically advanced nations that we need to get smarter about how we use these and other wireless devices. Fine print warnings that come with all smart phones today advise not keeping phones in the pocket or next to the body — advice that is typically ignored. Growing numbers of national authorities, from Israel to France and Russia are making concerted efforts to promote awareness of the need to Practice Safe Phone.
The proliferation of wireless gadgets overlooks a critical health issue: non-ionizing or microwave radiation at levels that do not induce measurable changes in temperature can change and damage the brain and sperm of experimental animals. A cellphone is a two-way microwave radio with intermittent and destabilizing pulses, unlike microwave ovens that steadily operate at the same frequencies at much greater power. The weak and erratic microwave radiation from cellphones and tablets cannot directly break the bonds that hold molecules together, but does disrupt DNA, weaken the brain’s protective barrier and release highly reactive and damaging free radicals. A 5 year old’s brain, healthy or otherwise, is encased in a thinner skull and contains more fluid than an adult brain. According to studies carried out by industry modelers in Switzerland and France, the bone marrow of a child’s head absorbs 10 times more radiation than an adult, while that of infants and toddlers will absorb even more. Few parents realize that infant apps such as One Fish Two Fish, Peekaboo Farm, and Twinkle Twinkle Little Star may do much more than amuse and distract babies. The American Academy of Pediatrics cautions that children need more real face time than screen time; more laps than apps.
Most disconcerting are findings from Nesrin Seyhan, the NATO-supported founding chairman of the Biophysics Department at Gazi University in Ankara, Turkey, whose studies show that prenatally exposed rats and rabbits have fewer brain cells — and those that survive sustain more damage to their brains, livers, reproductive systems and eyes. Recent reports from Yale University’s chief of Obstetrics and Gynecology, Hugh Taylor found that prenatal exposures significantly increased hyperactive behavior in offspring. Other research carried out by National Institute of Drug Abuse Director Nora Volkow, MD, PhD, showed that exposures to cellphone radiation directly alters brain metabolism in human brain cells. Experimental work completed by American, Australian, Greek and Turkish teams working with experts in male reproductive health has reported that cellphone-radiation-exposed human sperm die three times faster, swim significantly more poorly, become more deformed and develop significantly more damage to sperm DNA.
The brain cancer story remains complex, because the disease has a long latency—up to four decades—and because past uses and users differ radically from current ones.
Distance is your Friend
What can you do to protect yourself from radiation emitted from high tech gadgets? Fortunately, industry has begun to issue more warnings. Samsung provides this advice: “Your mobile device is not a toy. Do not allow children to play with it because they could hurt themselves and others, damage the device, or make calls that increase your mobile device bill. Keep the mobile device and all its parts and accessories out of the reach of small children.”
- When it comes to using electronic devices, remember: Distance is your friend.
- Don’t hold a cell phone directly up to your head. Use a headset or speakerphone to talk on the phone, or a case (such as Pong) that has been independently tested to reduce radiation up to 90%.
- Pregnant women should keep cell phones away from their abdomen and men who wish to become fathers should never keep phones on in their pocket.
- Don’t allow children to play with or use your cell phone. Older children should use a headset or speakerphone when talking on a cell phone.
- Do not text and drive, and use specially adapted antennas for cars to avoid absorbing maximum power as the phone moves from one cell system to another.
- Turn off your wireless router at night to minimize exposure to radiation.
- Eat green vegetables and get a good night’s sleep in a dark room to enhance natural repair of DNA that may have been damaged by radiation.
For more information, I recommend:
- Videos from Dutch National Public Television (with English subtitles by Google)
- Devra Davis speaks to the National Institute of Environmental Health Sciences
- Practice Safe Phone Use (various sources)
Devra Davis is the founder of the Environmental Health Trust, an organization dedicated to providing basic research and education about environmental health hazards and promote constructive policies locally, nationally and internationally. Dr. Davis lectures at Georgetown and Harvard, and is the Founding Director of the Center for Environmental Oncology and University of Pittsburgh Cancer Institute. Her new book Disconnect (selected by TIME magazine as a top pick) provides shocking detail about cell phone radiation and your health.
Warning: Your mobile gadgets can be hazardous to your heath
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Published: August 15th, 2012