Multiple sclerosis (MS) is an unpredictable, often disabling disease of the central nervous system that disrupts the flow of information within the brain, and between the brain and body. The cause of MS is still unknown – scientists believe the disease is triggered by an as-yet-unidentified environmental factor in a person who is genetically predisposed to respond.
According to the National MS Society, MS is thought to affect more than 2.3 million people worldwide. The progress, severity and specific symptoms of MS in any one person cannot be predicted. Most people with MS are diagnosed between the ages of 20 and 50.
According to the Mayo Clinic, the following risk factors may increase a person’s risk of developing MS: