National Institutes of Health suffering from Parkinson's suffering from Parkinson's suffering from Parkinson's gradually destroys suffering from Parkinson's suffering from Parkinson's suffering from Parkinson's newly diagnosed with Parkinson's disease Parkinson's Disease Parkinson's Disease 20-50% of patients National Institutes of Health progressive destruction gradually destroys according to the National Institutes of Health National Institutes of Health Parkinson's Disease suffering from Parkinson's suffering from Parkinson's Parkinson's disease (PD)