Learning another language is one of the brain's most demanding workouts.

Research suggests bilingualism may delay the onset of dementia symptoms.

Speaking another language strengthens both cognition and social connection.

Can you exercise your brain the way you exercise your body? The answer appears to be yes, and one of the most effective workouts may be learning another language.

As we age, many of us look for ways to stay mentally sharp. We tackle crossword puzzles, download brain-training apps, and take up new hobbies in the hope of preserving our memory and thinking skills. Increasingly, researchers are pointing to another activity that challenges the brain in a particularly powerful way: learning a new language.

Unlike many pastimes that exercise a single mental skill, language learning engages almost every major cognitive system at once. It calls on memory, attention, problem-solving, pattern recognition, and mental flexibility. Every conversation is a rapid-fire exercise in selecting words, applying grammar, suppressing competing alternatives, and interpreting meaning in real time. Few everyday activities ask quite so much of the brain.

Building a More Resilient Brain

One reason scientists are fascinated by bilingualism is its relationship with cognitive reserve, which is the brain's ability to cope with age-related changes or neurological........

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