Mayo Clinic, news release, Sept. 18, 2013 Blood tests might be able to help identify Parkinson’s disease patients with the greatest risk of developing dementia, a new study suggests. A genetic mutation called GBA leads to early onset of Parkinson’s and severe mental decline in about 4 percent to 7 percent of Parkinson’s patients. It … Continue reading Parkinson’s Patients at Genetic Risk for Dementia Might Be Identified Sooner