Cell Phones Affect Brain Activity
While population-based studies haven't led to conclusive findings about the link between cell phones and brain cancer, a new study shows that energy from the devices can indeed affect brain activity. Holding a cell phone to your ear for a long period of time increases activity in parts of the brain close to the antenna, researchers have found. Glucose metabolism — that’s a measurement of how the brain uses energy — in these areas increased significantly when the phone was turned on and muted, compared with when it was off, Dr. Nora Volkow, director of the National Institute on Drug Abuse, and colleagues reported in the Journal of the American Medical Association . “Although we cannot determine the clinical significance, our results give evidence that the human brain is sensitive to the effects of radiofrequency-electromagnetic fields from acute cell phone exposures,” co-author Dr. Gene-Jack Wang of Brookhaven National Laboratory in Long Island, where the study was...
