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Severe Hypoglycemia Increases Dementia Risk and Related Mortality: A Nationwide, Population-based Cohort Study

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Author(s)
Eugene HanKyung-do HanByung-Wan LeeEun Seok KangBong-Soo ChaSeung-Hyun KoYong-ho Lee
Keimyung Author(s)
Han, Eu Gene
Department
Dept. of Internal Medicine (내과학)
Journal Title
J Clin Endocrinol Metab
Issued Date
2022
Volume
107
Issue
5
Keyword
hypoglycemiadementiamortalitydiabetes
Abstract
Context:
There are few studies focused on the relationship between hypoglycemia and new-onset dementia in patients with type 2 diabetes and no study regarding mortality of dementia after hypoglycemia.

Objective:
We investigated the effect of severe hypoglycemia on dementia subtypes and its relation to overall mortality in patients with type 2 diabetes.

Methods:
We evaluated incident dementia, including Alzheimer disease and vascular dementia, among health checkup participants aged 40 years or older in the National Health Insurance System in Korea from January 2009 to December 2015. Episodes of severe hypoglycemia were examined for 3 years before the date of the health checkup.

Results:
Among 2 032 689 participants (1 172 271 men, 860 418 women), 14 443 (0.7%) experienced severe hypoglycemia, during a mean follow-up period of 6.9 ± 1.7 years. Individuals in the severe hypoglycemia group were more likely to be diagnosed with dementia compared to individuals without severe hypoglycemia (23.3% vs 7.3%; P < .001) and the overall incidence of Alzheimer disease was higher than vascular dementia. Dementia risk rose with increasing number of severe hypoglycemic episodes (1 episode [hazard ratio (HR) = 1.54; 95% CI, 1.48-1.60], 2 or more episodes [HR = 1.80; 95% CI, 1.66-1.94]). Overall mortality was higher in participants with dementia, but without severe hypoglycemia (HR = 2.03; 95% CI, 1.96-2.10) and severe hypoglycemia, but without dementia (HR = 4.24; 95% CI, 4.29-4.40), and risk of death was highest in those with both severe hypoglycemia and dementia (HR = 5.08; 95% CI, 4.83-5.35).

Conclusion:
Severe hypoglycemia is associated with dementia, especially Alzheimer disease and mortality; together, they have an additive effect on overall mortality.
Keimyung Author(s)(Kor)
한유진
Publisher
School of Medicine (의과대학)
Citation
Eugene Han et al. (2022). Severe Hypoglycemia Increases Dementia Risk and Related Mortality: A Nationwide, Population-based Cohort Study. J Clin Endocrinol Metab, 107(5), e1976–e1986. doi: 10.1210/clinem/dgab860
Type
Article
ISSN
1945-7197
Source
https://academic.oup.com/jcem/article/107/5/e1976/6500337
DOI
10.1210/clinem/dgab860
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/44319
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
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