Multiple sclerosis (MS) causes progressive paralysis by destroying nerve cells and the spinal cord. It interrupts vision, balance and even thinking.

On a suggestion from a colleague, Jeri-Anne Lyons decided to test how the disease responded to a radical therapy -- exposure to a certain wavelength of light called near-infrared (NIR).

"Never in a million years did I think it would help," says Lyons, an associate professor of biomedical sciences at the University of Wisconsin-Milwaukee (UWM), who studies the role of the immune response in MS.

But it did. In rodent models, early MS-like symptoms were treated with exposure to NIR light for a week, alternating with a week of no light. The clinical condition of the mice improved.

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