New Canadian research has found that having a strong ability for learning languages may help to reduce an individual's risk of developing dementia. Carried out by researchers at the University of Waterloo, the new study looked at 325 Roman Catholic nuns in the United States who were taking part in the larger, internationally recognized Nun Study, which is a longitudinal study of religious sisters aged 75 and over. The findings, published in the Journal of Alzheimer's Disease, showed that just six percent of the nuns who spoke four or more languages developed dementia, compared to 31 percent of those who only spoke one language.
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