The truth about the cell-phone–cancer link and what it means for you and your kids

By Julie A. Evans, Best Life

When Vini Khurana, PhD, an Australian (and Mayo Clinic–trained) neurosurgeon, announced that the link between cell-phone use and cancer was irrefutable--the result of his analysis of more than 100 studies--it set off alarm bells around the world. Use a cell phone, he said, and you increase your risk of developing a malignant brain tumor by two to four times. Until recently, the majority of research indicated little or no link between cell phones and cancer (the World Health Organization and the American Cancer Society maintain that cell phones pose no threat), but several new long-term studies have cast doubt about their safety. Given that cell phones and PDAs serve as lifelines for so many people--24 percent of 10- and 11-year-olds carry them--it raises urgent questions. To find out what precautions you should take when using your cell phone, we dialed the nation's leading experts.

Do cell phones cause cancer?

Maybe…with extended use. Mobile-phone users are twice as likely to develop malignant, difficult-to-treat brain tumors called gilomas, according to a first-of-its-kind study that analyzed the effects of cell-phone use over 10 years or more and was published last year in the journal Occupational Environmental Medicine. The Bioinitiative Working Group, an international coalition of scientists and public-health experts, recently published a hefty report detailing the link between the nonionizing radiation caused by a cell phone's electromagnetic fields (EMFs) and cancer, DNA damage, Alzheimer's, and other diseases. "The cells in the body react to EMFs in cell phones just like they do to other environmental toxins, including heavy metals and chemicals," says Martin Blank, PhD, a professor in bioelectromagnetics at Columbia University and one of the report's authors. The study found that risk from cell-phone use starts at 260 lifetime hours.

Do cell phones emit radiation only when you are talking?

No. "Cell phones give off radiation any time they're turned on so that they can communicate with base stations," says Lou Bloomfield, PhD, professor of physics at the University of Virginia and author of How Everything Works: Making Physics Out of the Ordinary. "The radiation emitted, however, is stronger and more frequent when you're talking or messaging." Also, the greater distance you are from a base station, the more radiation your phone must emit in order to get a signal, which is why your phone feels hot when you have low reception. That heat you feel is radiation. The Bioinitiative study found that adverse effects to DNA can also occur before the phone heats up. To reduce your exposure, make calls only when you have strong reception, hang up before your phone heats up, and store your phone away from your body when it's not in use.

http://health.msn.com/health-topics/cancer/articlepage.aspx?cp-documentid=100211877&GT1=31025