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The relationship between diabetes and the dementia risk: a meta-analysis
Fang Cao1, Fushuang Yang2, Jian Li2
1School of Basic Medical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China.
Diabetology & Metabolic Syndrome
|May 14, 2024
Summary
Diabetes significantly elevates dementia risk, especially in the early stages (under five years) or when hypoglycemia occurs. This highlights key factors for dementia prevention in diabetic individuals.
Area of Science:
- Neurology
- Endocrinology
- Public Health
Background:
- The relationship between diabetes mellitus and dementia risk remains unclear.
- Diabetic patients face an elevated risk of developing dementia.
- Understanding these links is crucial for dementia prevention strategies.
Purpose of the Study:
- To evaluate the specific factors linking diabetes to dementia onset.
- To provide evidence-based guidance for preventing dementia in individuals with diabetes.
Main Methods:
- Comprehensive literature search across PubMed, Embase, Web of Science, and Cochrane Library (2012-2023).
- Rigorous study selection using predefined inclusion/exclusion criteria.
- Quality assessment via Newcastle-Ottawa Scale (NOS) and data analysis using STATA 15.0.
Main Results:
- Meta-analysis of 15 studies (over 10 million patients) confirmed a significant association between diabetes and increased dementia risk (RR: 1.59).
- Diabetes duration under five years showed a higher dementia risk (RR: 1.29).
- Hypoglycemia episodes were also linked to a substantially increased dementia risk (RR: 1.56).
Conclusions:
- Diabetes is a significant risk factor for dementia.
- Shorter diabetes duration (less than five years) and hypoglycemia are critical factors increasing dementia risk.
- These findings underscore the importance of managing diabetes effectively to mitigate dementia risk.
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