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Parkinson's Disease Is More Than a Brain DisorderMonday, Sep 4, 2000
For many years, researchers have known that the movement problems associated with Parkinson's disease result from a loss of
neurons that produce a nerve-signaling chemical called dopamine in one part of the brain. A new study suggests that Parkinson's
disease (PD) also affects nerve endings that produce a related chemical, norepinephrine, in the heart. The finding improves
understanding about how Parkinson's disease develops and may lead to a way of predicting the disorder and possibly even preventing
it.
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