Mueller runs across the country while battling MS

ELLY GRIMM
• Leader & Times
Multiple sclerosis (MS) is a chronic autoimmune disease of the central nervous system where the body's immune system mistakenly attacks the protective myelin sheath around nerve fibers, causing communication disruptions between the brain and body. This leads to a wide range of symptoms, including vision problems, fatigue, muscle weakness, and cognitive difficulties.
The condition affects an estimated 2.8 to 2.9 million people worldwide, and statistics show in the United States, nearly 1 million people are living with MS. Statistics also show MS is more common in women, with a ratio of roughly two to three times more women affected than men.