Multiple Sclerosis in Canada: Prevalence, Risk Factors & Regional Data

Canada does not have the highest global MS prevalence; Sweden (374/100,000) and Denmark have higher rates. Within Canada, British Columbia leads at 314/100,000. Contributing factors:

  • Genetics: HLA gene variations increase susceptibility.
  • Environment: Epstein-Barr virus exposure may be a risk factor.
  • Geography: Colder climate, less sunlight, lower vitamin D may increase risk.
  • Healthcare system: Universal access may improve early diagnosis and treatment.

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