Bilingualism delays Alzheimer's manifestation by more than four years

December 1, 2014
Science Daily/Ghent University
The symptoms of Alzheimer disease (AD) manifest themselves about four to five years later in bilinguals as opposed to monolinguals. In bilinguals, the disease onset was estimated at the age of 77, while in monolinguals, this was at the age of 73.

Results showed that the age of AD manifestation was 71.5 in monolinguals and 76.1 in bilinguals. A similar difference was found for the age of AD diagnosis; for monolinguals this was 72.5 and for bilinguals it was 77.3. Analyses controlled for other confounding factors, such as education, profession, and socioeconomic status, which actually had a negative effect.
The protective effect of bilingualism

These findings confirm previous research suggesting that bilingualism can slow down cognitive aging and contribute to cognitive reserve. It seems that constantly and actively controlling two languages is like a workout for the brain. It challenges our grey cells and keeps them from degenerating.
Science Daily/SOURCE :http://www.sciencedaily.com/releases/2014/12/141201090428.htm

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