Parkinson's disease is a brain disorder. It occurs when certain nerve cells (neurons) in a part of the brain called the substantia nigra die or become impaired. When approximately 80 percent of neurons are damaged, the symptoms of Parkinson's disease appear. Parkinson's disease affects 1 in 100 people over the age of 60, with the average age of onset being 60 years. The risk of developing Parkinson's disease increases with age. In the United States, it is estimated that 60,000 new cases of Parkinson's disease are diagnosed each year, with 1.5 million Americans currently living with the disease.
A new study co-led by scientists at the La Jolla Institute for Immunology (LJI) adds increasing evidence that Parkinson's disease is partly an autoimmune disease.
Scientists may have solved one of the most puzzling and persistent mysteries in neuroscience: why some people are "right-brained" while others are "left-brained."
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