Aging Really Is 'In Your Head' (audio) Washington University School of Medicine Loading audio... Caption Many studies have found that when animals eat significantly less food, they live longer. What hasn't been clear is the mechanism that controls aging and longevity in those animals. But now scientists at Washington University School of Medicine in St. Louis have traced the connection between aging and longevity to some critical pathways in the brain, the same pathways that seem to be activated when animals eat less. Credit BioMed Radio, Washington University in St. Louis Usage Restrictions Credit to Washington University in St. Louis 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.