Is there an effect of dietary intake on MS-related fatigue? - A systematic literature review., August 2018

“...CONCLUSION:
Dietary intake holds the potential to lower MS-related fatigue, but solid conclusions are not possible based on the existing evidence. Sparse evidence points towards an effect of adequate magnesium and folate intake and a trend for decreased fatigue.”
https://www.ncbi.nlm.nih.gov/pubmed/30170268