summary: The pathogenesis of MS is complex and environmental factors like sun exposure and vitamin D levels may influence relapse rate. In this prospective study the authors found that more sunlight and therefore vitamin D was associated with fewer relapses.

authors: Tremlett H, van der Mei IA, Pittas F, Blizzard L, Paley G, Mesaros D, Woodbaker R, Nunez M, Dwyer T, Taylor BV, Ponsonby AL

source: Neuroepidemiology 2008 Oct 30;31(4):271-279

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