Mobile phone insomnia


A study funded by mobile phone companies has suggested that radiation from handsets can cause insomnia, headaches and confusion in users.

Sweden's Karolinska Institute and Wayne State University in the US studied 35 men and 36 women aged between 18 and 45 and exposed some to radiation equivalent to that sent out from mobile phones - 884 MHz of wireless signals - while others were given a placebo effect.

The study found that those exposed to the radiation took longer to enter the first of the deeper stages of sleep and spent less time in the deepest stage.

Reports of headaches were also greater during radio wave exposure than during the "sham" exposures and neither group was able to tell which was receiving the radio waves and which were not.

Sleep expert Dr Jeffrey Lipsitz said the results were not comforting.

"Aside from the sleep aspects, honestly, it's a little worrisome that you could measure any significant difference in people just because they've been exposed to radio waves that simulate cellphone use," he explained.

"It certainly cries out for more research."