People are exposed to all sorts of electromagnetic signals every day, including sunlight, cell phone signals, over-the-air radio, over-the-air TV, televisions, kitchen appliances and so forth. Power lines, and visible light also are sources of non-ionizing radiation.
Put simply, the risk from non-ionizing radiation is tissue heating, but all consumer appliances and safety standards for cell tower radios are set at levels so low tissue heating does not occur, according to the Federal Communications Commission. Some may worry about non-thermal effects, but nothing has been shown to be conclusive on that score.
That is not to say no hazards might exist, simply that we have not yet seen clear evidence of such harm to humans who are exposed to normal amounts of non-ionizing signals in daily life. More care has to be taken for workers who are around microwave radios, as radio frequency signal strength is stronger, the closer one is to the source of the signal.
I’ve already talked about non-ionizing radiation. But here is one more study, looking at RF and skin issues.
“Overall evaluations showed that the effects of mobile phone radiation on skin diseases are weak and have no statistical significance,” a team of researchers in Iran has found. The key phrase is “no statistical significance.” In other words, observed differences are no different than a random distribution would show.
The problem with all such studies, even long-term studies, is that we cannot isolate mobile phone use from all other environmental sources of possible skin damage. Even if correlation were shown to exist, it is not clear that there is causation at work.
This latest study is in that category of inconclusive results.
No comments:
Post a Comment