Activity of brain cells may change due to the use of mobile phones are too long attached to the ear. Weak electromagnetic radiation from mobile phones can affect the activity of cells in the brain.
Scientists from the National Institutes of Health U.S. found that time spent 50 minutes with a cellular phone attached to the ear is enough to alter brain cell activity in the part closest to the antenna device.

"What we found is the metabolism of glucose (a sign of brain activity) will be increased in brain regions closest to the mobile phone antenna," said Dr. Nora Volkow of the NIH.

The study was conducted to understand how the brain reacts to electromagnetic fields generated by mobile phone signals. Volkow said that he was quite surprised because of weak electromagnetic radiation from mobile phones can affect the activity of cells in the brain.

Volkow and team studied 47 participants who at the time his brain was scanned using a cell phone for 50 minutes and when the phone is turned off.



Researchers found an increase of about 7 percent of glucose metabolism in brain regions closest to the antenna the phone when the phone is in use. The results of this study have been published in the Journal of the American Medical Association.

The use of mobile phones has increased dramatically and is estimated there are about 5 billion phones in use worldwide. Although the phone is often linked with risk of brain cancer, but there is no conclusive evidence about it.

"It takes further studies to determine whether the signal from this phone has a direct influence on the metabolism of cells in the brain, and investigated whether these effects could affect one's health," says Professor Patrick Haggard of University College London.

Although not known with certainty whether this could pose a risk or not, but should someone not too old cell phone pressed to his ear.

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