THE COLD-HEARTED ***** CHRISTIAN GOD, BUSY AS USUAL
Parkinson 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. Normally, these cells produce a vital chemical known as dopamine.
Dopamine allows smooth, coordinated function of the body's muscles and
movement. When approximately 80% of the dopamine-producing cells are
damaged, the symptoms of Parkinson disease appear
.
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