Speaking two or more languages may help slow brain aging, according to new research.
The study, presented at the 2026 Federation of European Neuroscience Societies Forum, found that people who spoke multiple languages appeared to have younger brains than those who spoke only one language.
Researchers analyzed brain activity from hundreds of people in Spain's Basque region who spoke between one and four languages, including Spanish, Basque, French and English. They used artificial intelligence to estimate each participant's "brain age" based on patterns of brain connectivity.
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