Pooled studies from several countries show no increased risk of acoustic neuroma: This form of tumor was seen as most likely to be the result of exposure to an adjacent cellular phone. The British Journal of Cancer has published the study review which shows no substantial risk--meaning no statistically significant correlative factors--in cell phone use in the first decade of use.
Given that phones produce less and less signal strength as they've moved to more sophisticated digital technology, this should reduce any remaining potential harm over a longer term. Study authors and cancer charities in England recommend continuing to follow the issue to examine whether risks exist over periods longer than a decade of use.
Given that cell phones use substantially more power than Wi-Fi and are concentrating their signals much closer to the brain, this is another good piece of positive information in reducing concern that Wi-Fi and similar technologies have any effect on human health.
I've read tons of articles saying that cell phones are very harmful and cause cancer. What should I believe. Looks like the result of a research pretty much depends on who is the sponsor
[Editor's note: There are lots of ongoing studies and no smoking gun. Because cell phone are used so widely around the world and because different countries have different views of how science and industry should work, if there were a clear health threat, this would be reported and we'd have access to that information. It's almost certain that if a health risk is ever identified, it will be a long-term one with small effects because any mid-term or large effect would be quickly represented in the distinct population of earlier cell phone users: business people, mostly white and male, mostly 35 to 65. -gf]