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Speaking directly into a cellphone while holding it against your ear can alter brain activity in those areas closest to the device's antenna, claims a new study published Tuesday in the
Journal of the American Medical Association (JAMA).
Researchers at the National Institutes of Health (NIH) and the Brookhaven National Laboratory in New York studied 47 adults over the course of a year, using positron emission tomography (PET) to measure their glucose metabolism, or the amount of sugar it takes a cell to fuel activity, according to Shirley S. Wang of the
Wall Street Journal."They conducted scans after subjects had cellphones held to their left and right sides for 50 minutes on two different days," she said. "The first day neither cellphone was turned on. The second day the right phone was activated but muted so the participants wouldn't hear any noise. Because the participants didn't know which phone was active, their expectations couldn't skew the results."
They discovered that areas of the brain that were closest to the antenna became "significantly more active" when an operational cellphone was held next to the ear, even when it wasn't used to conduct a conversation, according to Wang.
In fact, their glucose metabolism levels spiked an average of 8% to 10%, which is said to be comparable to the increase in metabolism in the visual cortex when speaking to someone, study author Dr. Nora Volkow told the
Wall Street Journal.What remains unclear is whether or not that alteration of brain activity can cause harm to the orbitofrontal cortex, which is the region affected by the cellphone activity.
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Top 10 Ways to Avoid GMOs
Why We Need Mandatory GMO Food Labels
What's to Know About GMO?
Health is the Tipping Point to Identify and Eliminate GMOs
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