Ruth Ann Marrie is a professor of medicine and community health sciences at the University of Manitoba. She received her undergraduate degree in chemistry (1992) and her medical degree (1996) from Dalhousie University, both with Distinction. She completed neurology training at McGill University. This was followed by a fellowship in multiple sclerosis at the Cleveland Clinic, supported by a Sylvia Lawry Physician Fellowship Award from the National Multiple Sclerosis Society. Subsequently, she obtained a PhD in epidemiology from Case Western Reserve University (2007). Her research aims to understand the influence of comorbid factors, such as other chronic diseases, health behaviors, and critical illness on a range of multiple sclerosis–related health outcomes, and to improve the health of persons suffering from MS. Other areas of research interest include etiologic factors for MS, patient-reported outcomes, and pediatric MS.