Vitamin D deficiency is frequent in Northern Europe as 90% of Vitamin D is synthesized in the skin under the effect of the sun’s ultraviolet irradiation. Low Vitamin D blood levels in childhood and adolescence are a factor in the development of multiple sclerosis in adulthood. In a Finnish study published in March 2016, mothers with inadequate Vitamin D levels in early pregnancy almost doubled the risk of their children developing multiple sclerosis.

The results of basic and clinical multiple sclerosis research over the past ten years are gradually leading to significant changes in its treatment.