Multiple sclerosis is an autoimmune disease that affects the brain and spinal cord. Episodes can last for days, weeks or months and alternate with periods of reduced or no symptoms at all. Because nerves in any part of the brain or spinal cord may be damaged, patients with multiple sclerosis can have symptoms in many parts of the body such as: loss of balance, painful muscle spasms, numbness, abnormal sensation, tremors, problem in walking and coordination, double vision, vision loss, hearing loss, decreased attention span, poor judgment and memory loss. A new study from Germany suggests that breastfeeding may reduce the risk of multiple sclerosis.