Langer-Gould, AnnetteLucas, Robyn2019-11-251352-4585http://hdl.handle.net/1885/186579If vitamin D deficiency causes multiple sclerosis (MS), as smoking causes lung cancer, then we would expect this to be true across all racial/ethnic groups, and we would expect populations with high prevalence of vitamin D deficiency to have high incidence of MS. Neither is true; indeed, the evidence is quite the contrary.application/pdfen-AU© 2018 The Author(s)2018-11-3010.1177/13524585188084692019-05-19