tecnologia

A recent study has linked learning a new language after the age of 60 to a 38% reduction in the risk of developing Alzheimer’s disease, challenging the common belief that language acquisition is best left to younger years. The research, initially cited by The Independent, suggests that engaging with a new language in later life can provide a significant cognitive boost, impacting memory, attention, and neuronal plasticity.

The study followed 1,939 adults with an average age of 80, none of whom had dementia at the start of the eight-year observation period. Researchers found that those who engaged in cognitively enriching activities – including reading, writing, and language learning – experienced a 38% lower risk of Alzheimer’s and a 36% lower risk of mild cognitive impairment, even after accounting for factors like age, gender, and education level.

Experts in neurorehabilitation and language teaching highlight six key cognitive benefits associated with linguistic learning in advanced age. Natalie Mackenzie, a cognitive rehabilitation therapist, explained that language acquisition activates the hippocampus, a brain region crucial for learning and memory, alongside the prefrontal cortex, which governs working and long-term memory. The areas of Broca and Wernicke, responsible for speech production and language comprehension respectively, are also engaged.

“When you learn your first language or a second, you’re utilizing the hippocampus, which is responsible for learning and memory, and the prefrontal cortex, which is for your working and long-term memory,” Mackenzie stated. This coordinated activation of multiple cognitive domains makes language learning a neurologically demanding activity.

The impact on memory is particularly notable. Mackenzie emphasized that learning a new language stimulates the hippocampus, the primary center for memory formation. The process involves retaining sounds, grammatical structures, and vocabulary, manipulating this information, and progressively storing it. “The process of encoding, consolidation, and repetition helps to form those long-term memories, strengthens those neural pathways, and facilitates the retention of information,” she said.

Sustained attention is also enhanced through language learning. Noël Wolf, a language professor, noted that acquiring a new language sharpens attentional capacity. “You’re not just learning the language itself, but you also have to pick up on cues and perform multiple tasks at once when someone is speaking,” Wolf explained. Studies have linked bilingualism to improved attention, as it requires constant focus on words, phonetics, and sounds.

switching between languages promotes cognitive flexibility – the ability to alternate tasks, prioritize competing demands, and maintain concentration, ultimately boosting productivity. Consistent language practice drives neuroplasticity, maintaining and strengthening the neural pathways involved in learning, even in older adults, though at a potentially slower pace than in children.

The emotional benefits of language learning are also significant. The brain releases neurochemicals that increase motivation and confidence when acquiring new skills. Wolf added that learning a language can boost personal security by enabling greater autonomy in everyday situations, such as ordering food or interpreting signs while traveling.

Social benefits are also apparent, particularly for older adults. “Social isolation is a problem for many older people, but learning a language can be an ‘attack’ on loneliness,” Wolf said. Expanding one’s linguistic repertoire broadens opportunities for interaction, access to content in other languages, and connection with different cultures, fostering new relationships. Mackenzie recommends group learning environments, as language acquisition often involves social interaction, which can improve learning outcomes.