Newly published study on Vitamin D levels and MS risk in women. (Neurology). This study was funded by the National Institute of Neurological Disorders and Stroke

"Vitamin D deficiency may help identify whether a woman is at long-term risk for(sclerosis (MS), according to researchers."
"Our study, involving a large number of women, suggests that correcting vitamin D deficiency in young and middle-age women may reduce their future risk of MS."

http://www.medpagetoday.com/neurology/multiplesclerosis/67897

Supplementation may help reduce the elevated risk