Link between vitamin d levels and severity of optic neuritis in MS patients

New research published in the journal Neurology reports that people with multiple sclerosis (MS) who have higher vitamin D levels experience less severe acute optic neuritis. Dr Muhammed Malik, MD, and colleagues at the Harvard Medical School, Boston, Massachusetts, USA, found that seasonally-adjusted vitamin D levels were significantly associated with the severity of acute optic neuritis.  They observed that the odds ratio for a 10 IU increase in vitamin D level was 0.47 (95% CI: 0.32, 0.68; p < 0.001). (1)