Despite this pivotal link, not all people with vitamin D deficiency develop multiple sclerosis
. More research
is needed to fully understand why only some people develop multiple sclerosis from vitamin D deficiency and why others don't. However, a distortion of the CYP27B1 gene is increasingly apparent in MS cases and it's possible that the gene generates other, yet undetected, complications that lead to the disease—such as genetically caused rickets.