2013-11-07 16:27 The Korea Times
Being 'bilingual' delays dementia by 5 years
By Ko Dong-hwan A medical research confirmed that being bilingual prevents people, including the unlettered, from developing dementia, USA Today reported on Wednesday. The research compared average ages from two subject groups ㅡ dementia patients who are either bilingual or non-bilingual ㅡ when the first symptoms of dementia ㅡ memory loss and confusion ㅡ surfaced. The result showed that for the bilingual group, the symptoms surfaced at the age of 65.6, whereas for the non-bilingual group it did at 61.1, about five years faster than the former. The finding is particularly notable because it verified that the effectiveness of being bilingual is applicable to illiterate people as well: Among the group, those who are bilingual delayed the coming of dementia by six years compared to those who are non-bilingual. The study, however, also verified that speaking more languages doesn’t necessarily raise the chances of delaying the ailment. The research was led by Thomas Bak, a neurologist at the University of Edinburgh in Scotland, and his colleagues. Bak reviewed medical records of 648 dementia patients who visited a clinic in the city of Hyderabad, India. The choice of city was made based on the fact that many residents there spoke in combination of two or three languages, including Telugu, Dakkhini (a dialect of Urdu) and English. "We know from other studies that mental activity has a certain protective effect," said Bak. "Bilingualism combines a lot of different mental activities. You have to switch sounds, concepts, grammatical structures and cultural concepts. It stimulates your brain all the time." The study suggested that more children should be exposed to the language-learning experience, and that bilingual families keep using more than one language at home. “It's still unclear whether people can boost their brains by taking up a second language later in life,” added Bak. “It may never be too late.” Bak’s study was published Wednesday in the journal Neurology. |
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