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Relationship Between Type 2 Diabetes Mellitus and Cognitive Change in a Multiethnic Elderly Cohort.


ABSTRACT: To examine the association between diabetes mellitus and cognitive functioning at baseline and cognitive change over time in a large, ethnically diverse sample of older adults.Prospective cohort study.Washington Heights-Inwood Columbia Aging Project, a community-based, prospective study of risk factors for dementia in northern Manhattan, New York City.Hispanic, non-Hispanic black, and non-Hispanic white men and women aged 65 and older without dementia at baseline (N = 1,493).Participants underwent baseline and follow-up cognitive and health assessments approximately every 18 months. Generalized estimating equations were used to examine the longitudinal association between diabetes mellitus and cognition.Diabetes mellitus was associated with poorer baseline cognitive performance in memory, language, processing speed and executive functioning, and visuospatial abilities. After adjusting for age, education, sex, race and ethnicity, and apolipoprotein-?4, participants with diabetes mellitus performed significantly worse at baseline than those without in language and visuospatial abilities. There were no differences between those with and without diabetes mellitus in terms of rate of cognitive change over a mean follow-up time of 6 years.The rate of cognitive change in elderly persons with and without diabetes mellitus is similar, although cognitive performance is poorer in persons with diabetes mellitus. These findings suggest that cognitive changes may occur early during the diabetes mellitus process and highlight the need for studies to follow participants beginning at least in midlife, before the typical later-life onset of dementia.

SUBMITTER: Bangen KJ 

PROVIDER: S-EPMC4477832 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

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Relationship Between Type 2 Diabetes Mellitus and Cognitive Change in a Multiethnic Elderly Cohort.

Bangen Katherine J KJ   Gu Yian Y   Gross Alden L AL   Schneider Brooke C BC   Skinner Jeannine C JC   Benitez Andreana A   Sachs Bonnie C BC   Shih Regina R   Sisco Shannon S   Schupf Nicole N   Mayeux Richard R   Manly Jennifer J JJ   Luchsinger José A JA  

Journal of the American Geriatrics Society 20150611 6


<h4>Objectives</h4>To examine the association between diabetes mellitus and cognitive functioning at baseline and cognitive change over time in a large, ethnically diverse sample of older adults.<h4>Design</h4>Prospective cohort study.<h4>Setting</h4>Washington Heights-Inwood Columbia Aging Project, a community-based, prospective study of risk factors for dementia in northern Manhattan, New York City.<h4>Participants</h4>Hispanic, non-Hispanic black, and non-Hispanic white men and women aged 65  ...[more]

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