23.02.1911-JAMA - would show that talking on the phone for 50 minutes increases metabolism of the brain, right where it supports the antenna.
A new study released today by JAMA (The Journal of the American Medical Association) showed that glucose metabolism in the brain increases when the antennas are close to the ear phones.
Since the invention of cellular technology have always been suspicious about the risks of its use, but for researchers, the greater concern is the possible carcinogenic effects of modulated radio frequency emissions (RF-EMF) of mobile phones.
"The dramatic worldwide increase in the use of cell phones has led to concern about possible harmful effects of exposure to modulated radiofrequency electromagnetic fields, say researchers from the National Institute of Health (NIH)
The scientists, led by Dr. Nora Volkow, found that people who used cell phone for 50 minutes a day had an increased glucose metabolism in the brain. Glucose is a marker of brain activity.
Dr. Volkow and colleagues analyzed brain imaging of 47 individuals who were placed for one year for a period of 50 minutes every day, two mobile phones, one on the right ear and one on the left, turn one on and other off, or both off to compare the different results of the exposure.
To see the reaction of the brain used images from scanners that can see the brain activity after injecting fluorodeoxyglucose (
The scientists found that whole brain metabolism was different between the on and off, but warned that the region closest to the antenna of the brain (orbitofrontal cortex and temporal pole) was significantly greater, there metabolism glucose was about 7% higher compared with the period in which the phone was off.
"These results provide evidence that the human brain is sensitive to the effects of acute exposure to RF-EMF transmitted by cell phones," the researchers can not yet say whether this could generate some kind of anomaly.
Anyway, they explained that the studies linking the use of mobile phones increased risk of cancer of the brain remain unresolved. "