In a newly-released study, sponsored by the cell phone companies themselves, research shows that people who use a cell phone before bedtime take longer to reach the deeper stages of sleep and they spend less time in them once they get there. Not progressing into deep phase sleep interferes in the body's ability to repair damage suffered during the waking hours.
The study is especially important for children and teenagers who use their cell phones at night. Such failure to get adequate sleep can lead to mood changes, ADHD-like symptoms, depression, poor focus and poor academic performance.
In the study it was clearly demonstrated that the people who received radiation exposure mimicking a cell phone took longer to enter deep-phase sleep and spent less time in the deepest phase of sleep.
Professor Bengt Arnetz led the study and commented, "We did find an effect from mobile phones from exposure scenarios that were realistic. This suggests that they have measureable effects on the brain." He believes the radiation activates the brain's stress system.
The Mobile Manufacturers Forum who funded the study and represented the main handset companies, were embarrassed and tried to minimize the importance of the results.
The study was carried out by scientists from Karolinska Institute and Uppsala University in Sweden and from Wayne State University in Michigan. It was published by the Massachusetts Insititute of Technology's Progress in Electronics Research Symposium.
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