Auriel Willette Interview (AUDIO) Iowa State University Your browser does not support the audio element. Caption Auriel Willette, an Iowa State assistant professor of food science and human nutrition, explains how family history may alter a metabolic gene's behavior and increase the risk for Alzheimer's disease. Credit Dave Olson, Iowa State University News Service Usage Restrictions The audio file is embargoed until 12:01 a.m. ET on Tuesday, May 23. License Licensed 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.