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Multiple sclerosis: Fighting fatigue

Multiple sclerosis (MS) is an unpredictable autoimmune disease affecting about 400,000 people in the United States and about 2.1 million worldwide. With MS, the body’s immune system mistakenly attacks myelin, the substance that surrounds and protects nerve fibers. Most people with MS experience their first symptoms between the ages of 20 and 40, but a diagnosis is often delayed because of the transitory nature of the disease. People experience symptoms during “flare-ups” that could last weeks or…

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