Multilingual experience may help preserve youthful patterns of brain connectivity, although further research is needed to establish exactly why this happens. Moreover, switching between languages can demand constant mental attention, and this repeated exercise may be associated with brains that appear significantly younger than expected, research suggests.
The brain contains billions of nerve cells that exchange information through vast communication networks. Those connections commonly weaken with age, contributing to slower thinking and declining memory. However, new findings presented at the Federation of European Neuroscience Societies (FENS) Forum 2026 suggest that speaking more languages may slow this weakening. Dr Lucia Amoruso and her colleagues found that participants who spoke more languages generally showed younger patterns of brain connectivity. Earlier exposure to an additional language and greater fluency were also associated with more delayed brain aging, suggesting that both the length and intensity of multilingual experience may matter for brain health.
Building a Brain Age Clock to Measure Brain Aging
Amoruso, from the Basque Center on Cognition, Brain, and Language in San Sebastián, Spain, presented the findings. 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.
The investigation grew from earlier work showing that populations in countries where multilingualism is common appeared to age more slowly. To examine that pattern in greater detail, Amoruso and her colleagues focused on people from Spain’s Basque region, where residents may regularly use Spanish, Basque, French and English in daily life.
Participants spoke between one and four languages in different combinations. This unique setting allowed the researchers to move beyond a simple comparison of monolingual and bilingual speakers and examine whether increasing language experience corresponded with progressively younger brain patterns.The first challenge was finding a reliable way to estimate how old a brain appeared based on its activity. To build that reference, the researchers studied 728 people using magnetoencephalography (MEG). The advanced technique records the extremely faint magnetic fields generated when brain cells become active, providing a way to track how different parts of the brain communicate in real time.
Artificial intelligence then analyzed the recordings across different age groups. By learning what typical brain connectivity looks like at each stage of life, the system created a ‘brain aging clock’ that could accurately estimate age from patterns of neural communication alone. The researchers next applied that clock to a separate group of 144 people. Using a second group was crucial because it allowed them to test the model on individuals whose data had not been used to construct it, preventing bias.
More Languages Linked to Younger Brains: 6, 7, and 13 Years Difference
The difference emerged clearly when the researchers compared each participant’s chronological age with the age predicted from their brain activity by the AI clock. People who spoke two languages had brains that appeared approximately six years younger than those of people who spoke only one language. The estimated difference increased to about seven years among speakers of three languages and about 13 years among those who spoke four languages.
Dr Amoruso said: “In simple terms, people who spoke more languages tended to have brains that looked younger than expected for their chronological age. The effect was not only related to the number of languages spoken. Higher language proficiency and earlier acquisition of a second language were also associated with more delayed brain aging.” “This suggests that multilingual experience matters as a gradient: it is not simply about being bilingual or not, but about the depth and duration of language experience,” she explained. Therefore, it is a dose-dependent effect — more languages, earlier start, higher fluency equals younger brain connectivity.
Switching between languages can demand constant attention. A speaker may need to select one vocabulary, suppress another, and adjust to different sounds or grammar, all within seconds. This constant mental juggling acts like a workout for the brain’s executive control networks.
Limits Shape the Next Questions and Future Research
The researchers adjusted their analysis for age, sex and education, all of which could influence brain measurements. Even so, the findings cannot prove that multilingualism directly caused the younger brain patterns, as it is an observational association.
Other differences between participants may partly explain the association. People who speak several languages may also differ in lifestyle, social activity, cognitive engagement, or other experiences that help maintain brain health. For example, multilinguals may be more socially active or educated.
Amoruso and her colleagues now plan to investigate whether similar protective patterns appear in people with neurodegenerative conditions such as Alzheimer’s disease. These disorders gradually damage nerve cells and brain function, making it especially important to understand experiences that may strengthen the brain’s ability to cope with age-related changes and build cognitive reserve.
They also want to examine whether managing closely related languages, like Spanish and Italian, has a particularly strong effect. Similar languages may share many words and grammatical structures, potentially forcing speakers to exert greater cognitive control to choose the intended language while keeping the other from interfering, thus giving a stronger brain workout.
Language Learning May Support Resilience and Brain Health
Professor Christina Dalla of the National and Kapodistrian University of Athens, Greece, chairs the FENS Forum communication committee and was not involved in the research. She said: “We know that many factors can influence our brain health and mental abilities as we age. For example, we know that not smoking, eating well, social and artistic engagement, as well as being active, can help.”
“How we use our brains throughout life can also have an impact, especially if we engage in effortful learning that activates our brain. This study suggests that learning a second, third or fourth language could help our brains to stay younger for longer, and the earlier we start, the better. There are many good reasons for learning another language at any age – social, cultural and for the health of your brain – so we should support language learning at school and throughout life, even if it’s hard,” she added.
Analysis: A Workout for Your Brain
This FENS 2026 study provides compelling evidence that multilingualism is not just a cultural skill but a powerful form of brain training. With a 6-year younger brain for bilinguals and 13 years for quadrilinguals, the gradient effect is striking. While causality still needs to be proven, learning languages at any age appears to be one of the most effective, low-cost ways to preserve youthful brain connectivity.
FAQ
1. Does speaking more languages make your brain younger?
FENS Forum 2026 research using MEG brain age clock found people who spoke 2 languages had brains appearing 6 years younger, 3 languages 7 years younger, and 4 languages 13 years younger than monolinguals, with earlier learning and higher fluency linked to more delayed aging.
2. How did scientists measure brain age?
Researchers built an AI brain aging clock using magnetoencephalography recordings from 728 people to learn typical connectivity patterns at each age, then tested it on 144 separate people from Basque region who spoke 1-4 languages.
3. Why does learning languages preserve brain connectivity?
Switching languages demands constant attention — selecting vocabulary, suppressing another language, adjusting grammar — which exercises executive control networks and may help maintain youthful connectivity and build cognitive reserve against aging.
4. Can learning languages prevent Alzheimer’s?
Study cannot prove causation and did not study Alzheimer’s patients yet. Researchers plan to investigate if multilingual patterns appear in neurodegenerative conditions like Alzheimer’s to see if it builds resilience, but lifestyle factors may also contribute.
Disclaimer: This article is for general informational and educational purposes only and is based on preliminary research presented at the Federation of European Neuroscience Societies (FENS) Forum 2026 by Dr Lucia Amoruso. The findings have not yet undergone full peer-reviewed publication. Association does not prove causation, and other lifestyle, education, and social factors may partly explain the link. This does not constitute medical advice. For concerns about brain health, memory, or neurodegenerative conditions, please consult a qualified neurologist or healthcare professional. Our news portal and its authors assume no liability for actions taken based on this information.
