There is much debate regarding the importance of vitamin D. Some experts believe it plays little to no role in disease. However, now we can say that it does play a role in disease — especially in multiple sclerosis (MS).

In the past, research has provided extensive evidence supporting the relationship between MS and vitamin D. Several of the most conclusive studies, randomized controlled trials, have found vitamin D has a treatment effect in MS. Yet, skeptics still question these findings.

You may think vitamin D levels entirely depend on how much sunshine you receive or supplements you take, but that is not always the case. Some people inherit genes that result in chronically low vitamin D levels. If they don’t sunbathe or supplement, they go their entire life deficient.

Researchers recently used a new technique, one better than randomized controlled trials (RCT), to evaluate how genetically lower levels of vitamin D relate to the risk of MS.

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