Learning and speaking more than one language could do more than improve communication—it may also help keep your brain younger for longer. A new study suggests that multilingual individuals show brain patterns associated with slower brain aging, with those speaking four languages displaying brain characteristics comparable to people around 13 years younger.
The findings were presented at the Federation of European Neuroscience Societies (FENS) conference in Barcelona, where researchers shared evidence linking multilingualism to healthier brain networks and improved cognitive resilience.
The study found that people who spoke two languages had brains that appeared approximately six years younger than those who spoke only one language. For participants who spoke three languages, the difference increased to around seven years, while individuals fluent in four languages showed brain patterns associated with being about 13 years younger.
Researchers focused on brain age, a measure that compares the biological condition of the brain with a person’s actual age. As people grow older, communication between brain cells gradually weakens, which can contribute to slower thinking, reduced memory, and diminished information-processing speed.
To investigate whether multilingualism influences this process, scientists from Spain, Chile, Argentina, and Ireland examined participants living in Spain’s Basque region, an area where speaking multiple languages is common. Many participants regularly used combinations of Spanish, Basque, French, and English, providing researchers with an ideal population for studying the long-term effects of multilingualism.
The researchers found that people who spoke multiple languages generally exhibited healthier brain connectivity than monolingual participants. Stronger communication between brain networks is believed to support cognitive flexibility, learning, memory, and problem-solving abilities as people age.
Although the findings highlight a strong association between multilingualism and slower brain aging, researchers caution that the study does not prove that learning additional languages alone prevents age-related cognitive decline. Brain health is influenced by several factors, including physical activity, education, sleep quality, diet, genetics, and overall lifestyle.
Even so, previous research has consistently suggested that learning and regularly using multiple languages may help build cognitive reserve—the brain’s ability to adapt and maintain function despite aging or neurological changes. This reserve may delay the onset of age-related cognitive impairment in some individuals.
The latest findings add to growing scientific evidence that keeping the brain mentally active through lifelong learning can support healthy aging. Whether learning a second language or becoming fluent in several, multilingualism may offer lasting cognitive benefits alongside its practical advantages in everyday life.
