January 30, 2012 2 Comments
Since the call for laboratory data was high I looked further into this matter. I can only say that as with anything else with this topic, a big controversy exists. Although in contradiction to most of the earlier findings that there is no relation between brain cancer and cell phone usage, it seems that there is a link between DNA damage and RF signals. For example:
The American Cancer society states that: ‘Experiments in the lab have shown that direct RF waves, which are given off by cell phones, have not enough energy to damage DNA directly. This has been supported by several studies carried out in the lab.’
On the other hand a study from January, 2012 by Cogulu et al. has shown that: ‘Cell phones which spread RF may damage DNA and change gene expression in brain cells.’ During this study brain cells of mice were exposed to RF signals and a SAR (Specific absorption rate) of 0,725/Kg for 6 hours in 3 days at 25°C.
Already earlier there were studies showing that RF waves could affect the DNA in brain cells. For example a study by Lai and Singh in 1997 showed that DNA damage occurred in rat brain cells after exposure to RF waves.
This contradicts the most studies stating that there is no relation between brain cancer and cell phone usage. Since I have not found any conclusive data regarding humans there is always room for questions like: ‘are the effects on human brain cells the same?
More information on SAR can be found here: http://en.wikipedia.org/wiki/Specific_absorption_rate
American Cancer Society, http://www.cancer.org/Cancer/CancerCauses/OtherCarcinogens/AtHome/cellular-phones
Cogulu et al., 2012, http://rd.springer.com/article/10.1007/s11060-011-0644-z#