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8:41 PM
A major study that examined whether cell phone use increases the risk of gliomas (malignant tumors) and meningiomas (benign tumors) has found no evidence that it does. The research, conducted in 13 countries using a common protocol, involved 2,708 glioma cases, 2,409 meningioma cases, and matched controls. It is the largest case-control study of cell phones and brain tumors conducted to date, with the largest numbers of users with at least 10 years of exposure and the greatest cumulative hours of use of any study. For the small proportion of study participants who reported spending the most total time on cell phone calls, there was some association with glioma, but the researchers considered this finding inconclusive. [INTERPHONE Study Group. Brain tumor risk in relation to mobile telephone use: Results of the INTERPHONE international case-control study. International Journal of Epidemiology. 39:675-694, 2010] http://www.ncbi.nlm.nih.gov/pubmed/20483835
The National Cancer Institute has summarized the findings of smaller studies, most of which found no overall association. [Cell phones and cancer risk. NCI Web site, May 19, 2010] http://www.cancer.gov/cancertopics/factsheet/Risk/cellphones A few of the studies found slight possible higher risks for certain tumors, but the most likely explanation for this is that if enough data points are studied, some may look significant even though they are not.
Many laboratory studies have found no evidence that radio waves are carcinogenic in laboratory rodents, and physicists point out that radio waves are not sufficiently energetic to cause DNA damage. All evidence considered, there is no current reason to avoid cell-phone use out of fear that it will cause tumors.
Source: www.quackwatch.org