More evidence bilingualism protects against dementia

An Indian study involving 648 dementia patients, of whom 391 were bilingual, has found that, overall, bilingual patients developed dementia 4.5 years later than the monolingual ones. There was no additional advantage to speaking more than two languages.

The effect remained after factors such as education, sex, occupation, and urban vs. rural dwelling, had been accounted for. The finding is consistent with previous research, and is not only the largest study so far on the subject, but the first to show the effect also applies to illiterate people who had not attended school. Moreover, the effect was found in three different types of dementia: frontotemporal, vascular, and Alzheimer’s disease.

http://www.eurekalert.org/pub_releases/2013-11/uoe-sas110613.php

http://www.psmag.com/health/evidence-bilingualism-delays-onset-dementia-69595/

[3548] Alladi, S., Bak T. H., Duggirala V., Surampudi B., Shailaja M., Shukla A K., et al.
(2013).  Bilingualism delays age at onset of dementia, independent of education and immigration status.
Neurology. 81(22), 1938 - 1944.

Related News

Analysis of mitochondrial DNA (mtDNA) in the cerebrospinal fluid has found that both symptomatic Alzheimer’s patients and asymptomatic patients at risk of A

Comparison of the EEGs of 27 healthy older adults, 27 individuals with mild Alzheimer's and 22 individuals with moderate cases of Alzheimer’s, has found statistically significant differences across the three groups, using an algorithm that dissects brain waves of varying frequencies.

Data from two longitudinal studies of older adults (a nationally representative sample of older adults, and the Alzheimer’s Disease Neuroimaging Initiative) has found that a brief cognitive test can distinguish memory decline associated with healthy aging from more serious memory disorders, year

Analysis of 40 spinal marrow samples, 20 of which belonged to Alzheimer’s patients, has identified six

Data from 848 adults of all ages has found that brain volume in the default mode network declined in both healthy and pathological aging, but the greatest decline occurred in Alzheimer’s patients and in those who progressed from mild cognitive impairment to Alzheimer’s disease.

New research supports the classification system for preclinical Alzheimer’s proposed two years ago. The classification system divides preclinical Alzheimer's into three stages:

Initial findings from an analysis of cerebrospinal fluid taken between 1995 and 2005 from 265 middle-aged healthy volunteers, of whom 75% had a close family m

Cognitive testing for dementia has a problem in that low scores on some tests may simply reflect a person's weakness in some cognitive areas, or the presence of a relatively benign form of mild cognitive impairment (one that is not going to progress to dementia).

A French study has predicted with 90% accuracy which patients with mild cognitive impairment would receive a clinical diagnosis of Alzheimer's disease within the following two years.

Studies linking head trauma with increased risk and earlier age of onset for Alzheimer's disease have yielded contradictory results.

Pages

Subscribe to Latest newsSubscribe to Latest newsSubscribe to Latest health newsSubscribe to Latest news