Association Between Sunlight Exposure and Vitamin D Intake and Multiple Sclerosis Disability and Progression

Background: Some studies on Multiple Sclerosis (MS) have suggested that adequate vitamin D intake can modulate the course of MS and decreases its incidence. However, there are limited studies with conflicting findings on the relation between MS severity, its course, and vitamin D intake. Objectives: The current study aimed to compare vitamin D intake and sunlight exposure between MS phenotypes and evaluate their association with disability and fatigue in each phenotype. Materials & Methods: A total of 197 patients with MS were recruited from patients referring to MS clinic in Kashani Hospital in Isfahan, Iran. Subjects were assessed for sunlight exposure, vitamin D intake, physical activity, and fatigue. SPSS was used for statistical analysis. P