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KMID : 1200020220460060923
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Diabetes & Metabolism Journal
2022 Volume.46 No. 6 p.923 ~ p.935
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Fasting Glucose Variability and the Risk of Dementia in Individuals with Diabetes: A Nationwide Cohort Study
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Lee Da-Young
Kim Jae-Young
Park Sang-Hyun
Park So-Young
Yu Ji-Hee
Seo Ji-A
Kim Nam-Hoon
Yoo Hye-Jin
Kim Sin-Gon
Choi Kyung-Mook
Baik Sei-Hyun
Han Kyung-Do
Kim Nan-Hee
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Abstract
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Background : We investigated whether fasting glucose (FG) variability could predict the risk of dementia.
Methods : This cohort study analyzed data from Koreans with diabetes after at least three health examinations by the Korean National Health Insurance Corporation between 2005 and 2010, which included at least one examination between 2009 and 2010. A total of 769,554 individuals were included, excluding those aged <40 years and those with dementia. FG variability was measured using the variability independent of the mean (FG-VIM). The incidence of dementia was defined by the International Classification of Diseases 10th Revision codes and prescription of anti-dementia medication and was subdivided into Alzheimer’s disease (AD) and vascular dementia (VD).
Results : During the 6.9-year follow-up, 54,837, 41,032, and 6,892 cases of all-cause dementia, AD, and VD, respectively, were identified. Cox proportional regression analyses showed that as the FG-VIM quartile increased, the risk of dementia serially increased after adjustment for metabolic factors, income status, and diabetes-related characteristics, including the mean FG. Participants in FG-VIM quartile 4 showed a 18%, 19%, and 17% higher risk for all-cause dementia, AD, and VD, respectively, than those in quartile 1; this particularly included non-obese patients with a longer duration of diabetes, high FG levels, dyslipidemia, and those taking glucose-lowering medications. Conversely, the baseline FG status and dementia showed a U-shaped association.
Conclusion : Increased FG variability over 5 years can predict the risk of dementia in individuals with diabetes in Korea. This finding was more pronounced in patients with less favorable metabolic profiles.
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KEYWORD
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Alzheimer disease, Dementia, Dementia, vascular, Diabetes mellitus, Glucose
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