Dr Lucia Amoruso and her colleagues found that participants who spoke more languages generally showed younger patterns of brain connectivity. She collaborated with researchers from the Latin American Brain Health Institute at the Universidad Adolfo Ibañez, Chile, the Cognitive Neuroscience Center at the Universidad de San Andres, Argentina, and the Global Brain Health Institute at Trinity College Dublin, Ireland. Building a brain age clockThe investigation grew from earlier work showing that populations in countries where multilingualism is common appeared to age more slowly. Even so, the findings cannot show that multilingualism directly caused the younger brain patterns. People who speak several languages may also differ in lifestyle, social activity or other experiences that help maintain brain health.