The Yin and Yang of Alzheimer's (IMAGE) Rensselaer Polytechnic Institute Caption Researchers believe an imbalance of peptides leads to Alzhiemer’s progression. Credit Rensselaer Polytechnic Institute/Caitlin Piette Usage Restrictions Be sure to use the credits listed. 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.