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A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
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The case for vitamin D supplementation in multiple sclerosis.

Aravind Ganesh1, Sabrina Apel2, Luanne Metz3

  • 1Resident, Clinical Neurosciences, University of Calgary, 1403 29 Street NW Calgary, Alberta, Canada T2N 2T9.

Multiple Sclerosis and Related Disorders
|April 17, 2015
PubMed
Summary

Vitamin D deficiency correlates with increased Multiple Sclerosis (MS) activity and disability. While supplementation shows promise, definitive evidence for a causal link or optimal dosing in MS patients is still lacking.

Keywords:
CausationDietary SupplementsImmunomodulationMultiple SclerosisRelapse preventionVitamin D

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Area of Science:

  • Neuroimmunology
  • Endocrinology
  • Clinical Research

Background:

  • Vitamin D plays a role in immunomodulation.
  • Low vitamin D levels correlate with Multiple Sclerosis (MS) development.
  • The influence of vitamin D on MS disease activity is under investigation.

Purpose of the Study:

  • To systematically review evidence on vitamin D's role in MS disease activity.
  • To assess the efficacy of vitamin D supplementation in MS patients.

Main Methods:

  • Comprehensive literature search across multiple databases (Medline, Embase, Pubmed, etc.).
  • Appraisal of 57 selected studies using epidemiological principles and Cochrane guidelines.
  • Interpretation of evidence using Bradford-Hill criteria and calculation of Number Needed to Treat (NNT).

Main Results:

  • Consistent positive correlation between vitamin D deficiency and MS relapse/disability.
  • Negative correlation between vitamin D levels and inflammatory markers in MS.
  • Preliminary evidence suggests vitamin D may attenuate autoimmune response and reduce disease burden.

Conclusions:

  • Current evidence strongly associates vitamin D deficiency with MS activity but does not establish causality.
  • Vitamin D supplementation is a promising therapeutic avenue for MS.
  • Further high-quality randomized clinical trials are needed to confirm efficacy and determine optimal dosage.