New research has found that learning another language can slow ageing in the brain by up to 13 years. Multilingualism is believed to promote brain connectivity and slow its decline with age, offering a compelling neuroscientific incentive for monoglots to embrace language learning.
The Study's Findings
Scientists have discovered that speaking multiple languages can delay cognitive decline by as much as 13 years compared to monolinguals. The study suggests that the mental effort required to switch between languages strengthens neural pathways, enhancing brain resilience. This adds to a growing body of evidence linking bilingualism to improved executive function and memory in older age.
Personal Reflections on Language Acquisition
Columnist Rhiannon Lucy Cosslett reflects on her own multilingual experiences, noting that speaking another language—especially one that is rusty—feels like neurons connecting as one grapples for the correct word or verb conjugation. She shares anecdotes from a recent trip to France, where she successfully argued with a waiter in French about overpriced tortilla chips, and from Italy, where she helped her father practice Italian. Cosslett emphasizes that humility is key to language learning, but the rewards include intellectual stimulation, cultural enrichment, and the joy of reconnecting with lost parts of oneself.
The Joy of Multilingualism
Beyond the health benefits, multilingualism opens up new worlds and perspectives. Cosslett writes, 'It’s enriching, it’s intellectually stimulating, it opens up your world and perspective, and it allows you to meet and communicate with many new people.' She also highlights the fun of exploring idioms, such as the French phrase 'C’est le petit Jésus en culotte de velours!' (It's the baby Jesus in velvet underpants!), used to describe a very fine wine.
Practical Implications
The research underscores that while learning a language earlier in life is beneficial, it is never too late to start. Cosslett encourages readers to embrace the process, even if it means looking foolish at times. She notes that many people, like London Uber drivers, are multilingual, and that the effort is worthwhile for both cognitive health and personal growth.



