UV radiation, not vitamin D, might limit multiple sclerosis symptoms

Sunshine effects on MS might be more complicated than previously thought, mouse study suggests

By Nathan Seppa, 11:25 AM March 23, 2010

Ultraviolet radiation from sunshine seems to thwart multiple sclerosis, but perhaps not the way most researchers had assumed, a new study in mice suggests.

If validated in further research, the finding could add a twist to a hypothesis that has gained credence in recent decades. The report appears online March 22 in the Proceedings of the National Academy of Sciences.

Scientists have hypothesized that MS is rare in the tropics because people synthesize ample vitamin D from exposure to the ...

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