Speaking two languages may delay dementia onset

Researchers in India found aged people who spoke two languages developed dementia about 4.5 years later than those who spoke one language.

The significant difference in age at onset was found in people who developed Alzheimer’s disease dementia, frontotemporal and vascular dementia.

This also held true for people who were illiterate – the first time this has been studied – underlining the protective effect was independent of educational level and occupation, the authors said.

Speaking more than two

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