Very odd

Cellphone radiation is good for Alzheimer's mice

Regular exposure to an electromagnetic field identical to the ones produced by mobile phones seems to improve memory in mice with symptoms of Alzheimer's disease...

To the researchers' surprise, the memory of both normal and transgenic mice exposed to the electromagnetic field (EMF) seemed better by the end of the experiment than that of a control group of mice that were not irradiated.

Arendash speculates that radiation might increase the electrical activity of neurons, which could in turn improve the brain's ability to form memories. An experiment in 2000 found that if people were exposed to an EMF equivalent to mobile-phone radiation before they went to bed, their brain activity during sleep increased....

They found that the brains of transgenic mice that had been exposed to the EMF from two months old did not contain as many plaques as transgenic control mice of the same age that had not been exposed to the EMF.

What's more, in the older transgenic mice, which had already developed brain plaques before the experiment began, the EMF exposure seemed to have broken up and shrunken the plaques. Arendash say he doesn't know how the EMF could do this.

That's a very surprising finding, and as the article says, it would have to be replicated to be sure the effect is real.