The more languages you speak, the younger your brain is

A recent study has revealed that multilingual individuals may have brains that appear significantly younger than their actual age. The findings were presented at a conference organized by the European Federation of Neuroscience Societies in Barcelona. According to the research, people who speak two languages had brain activity resembling that of individuals approximately six years younger. Those fluent in three languages showed brain patterns about seven years younger, while speakers of four languages exhibited brain activity comparable to that of people around thirteen years younger. The study was conducted by scientists from Spain, Chile, Argentina, and Dublin, who compared residents of the Basque region, known for its high level of multilingualism. In this area, many people speak Spanish, Basque, French, and/or English. Researchers used magnetoencephalography to measure brain activity among 728 participants of varying ages and levels of language proficiency. They then employed artificial intelligence to analyze these results and determine the typical level of neural connectivity associated with specific ages. The Basque region is characterized by a high degree of multilingualism. Photo: Guliver/Getty Images To validate their findings, researchers examined another group of 144 individuals, including monolinguals, bilinguals, trilinguals, and quadrilinguals. During analysis, they considered factors such as age, gender, and education level of participants. However, they noted that other variables affecting brain health could not be entirely ruled out, such as lifestyle choices and social engagement. Dr. Lucia Amoruso from the Basque Center on Cognition, Brain and Language explained that individuals who speak multiple languages tend to have brains that look younger than expected based on their chronological age. She emphasized that higher levels of linguistic knowledge and earlier acquisition of additional languages correlate with slower brain aging. This suggests that multilingualism has a cumulative effect rather than being solely determined by whether someone is bilingual or not. Professor Eef Hogervorst, a professor of biological psychology at Loughborough University, urged caution in interpreting the results. While evidence indicates that multilingualism is linked to greater brain resilience, it is possible that people who speak multiple languages also lead healthier lifestyles or have better access to protective factors and activities, such as reading, lifelong learning, and playing musical instruments. These elements might contribute independently to maintaining cognitive health. The study highlights the potential benefits of multilingualism beyond mere communication skills. It underscores how engaging with multiple languages can influence brain structure and function over time. Researchers suggest that the prolonged exposure to diverse linguistic environments fosters cognitive flexibility and enhances neural networks responsible for memory, attention, and problem-solving. This could potentially delay the onset of neurodegenerative diseases and improve overall mental agility. While the findings are promising, experts emphasize that further research is needed to fully understand the mechanisms behind the observed effects. Longitudinal studies tracking the same individuals over extended periods would help clarify whether multilingualism directly contributes to slower brain aging or if other confounding factors play a role. Additionally, exploring the impact of different types of languages—such as tonal versus non-tonal languages—and the age at which second languages are acquired could provide deeper insights into the relationship between language and cognition. As interest in the cognitive benefits of multilingualism grows, educational institutions and policymakers may consider promoting language learning programs aimed at fostering cognitive resilience. Such initiatives could encourage early exposure to multiple languages, potentially offering long-term advantages for brain health. Meanwhile, individuals seeking ways to maintain mental sharpness might find value in incorporating multilingual experiences into their daily lives, alongside other cognitively stimulating activities.