Parkinson's and suicide risk; biomarkers and underrepresentation in Alzheimer's trials, immune system changes in ALS and Parkinson's.

Neurology Today Editor-in-chief Joseph E. Safdieh, MD, FAAN, discusses new studies showing double the suicide risk among Parkinson's patients; underrepresentation of non-White people in Alzheimer's trial related to biomarker eligibility; early immune systems changes may play early role in ALS and Parkinson's.