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There's been some questions regarding cell phones and whether their signals can lead to cancer. That's still up in the air. But brand new research out Wednesday suggests those signals actually have a health benefit.

University of South Florida researchers believe long-term exposure to the electro-magnetic waves associated with cell phone use may prevent, and even reverse, alzheimer's disease.

Researchers exposed mice to cell phone signals from a centrally-located antenna. They found the signals erased protein deposits, a hallmark of alzheimer's, in older mice. The signals also prevented the protein deposits from building up in the younger mice. Most of the treatments available right now target these deposits.

Researchers hope this could be an effective, non-invasive and drug-free way to prevent and treat alzheimer's disease in people. The study appears in the Journal of Alzheimer's Disease.