Primary Prevention participant clinical exam (IMAGE) WashU Medicine Caption Primary Prevention trial participant Hannah Richardson, 24, undergoes a clinical exam given by WashU Medicine neurologist Nupur Ghoshal, MD, PhD. The international trial, led by WashU Medicine, aims to determine whether stopping the early molecular changes that lead to symptomatic Alzheimer’s disease can prevent the disease from ever taking hold. Credit Huy Mach/WashU Usage Restrictions This image is to be used in accordance with the mission, policies and guidelines of Washington University in St. Louis. Visit https://wustl.edu/about/compliance-policies/media-policies/multimedia-use/ for more information. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.