Cellphones may protect brain from Alzheimer's

Wed Jan 6, 2010 6:46pm EST
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By JoAnne Allen

WASHINGTON (Reuters) - A study in mice suggests using cellphones may help prevent some of the brain-wasting effects of Alzheimer's disease, U.S. researchers said on Wednesday.

After long-term exposure to electromagnetic waves such as those used in cell phones, mice genetically altered to develop Alzheimer's performed as well on memory and thinking skill tests as healthy mice, the researchers wrote in the Journal of Alzheimer's Disease.

The results were a major surprise and open the possibility of developing a noninvasive, drug-free treatment for Alzheimer's, said lead author Gary Arendash of the University of South Florida.

He said he had expected cell phone exposure to increase the effects of dementia.

"Quite to the contrary, those mice were protected if the cell phone exposure was stared in early adulthood. Or if the cellphone exposure was started after they were already memory- impaired, it reversed that impairment," Arendash said in a telephone interview.

Arendash's team exposed the mice to electromagnetic waves equivalent to those emitted by a cellphone pressed against a human head for two hours daily over seven to nine months.

At the end of that time, they found cellphone exposure erased a build-up of beta amyloid, a protein that serves as a hallmark of Alzheimer's disease.

The Alzheimer's mice showed improvement and had reversal of their brain pathology, he said.   Continued...