Lipid levels and the risk of dementia: A dose–response meta‐analysis of prospective cohort studies

Annals of Clinical and Translational Neurology - Tập 9 Số 3 - Trang 296-311 - 2022
Ying Zhu1, Xu Liu1, Ruixia Zhu1, Jingjing Zhao1, Qianwen Wang1
1Department of Neurology, The First Hospital of China Medical University, Shenyang, China

Tóm tắt

AbstractObjectivesWe performed a dose–response meta‐analysis to estimate the association between lipid profiles with the risk of dementia and the potential differences according to the subtype of dementia based on prospective studies.MethodsWe searched PubMed, Embase and Web of Science for relevant articles and performed a meta‐analysis. We applied fixed or random‐effects models to calculate pooled relative risk (RR) with their 95% confidence intervals (CI). The dose–response relationship was assessed by restricted cubic spline.ResultsTwenty‐five prospective studies comprising 362,443 participants and 20,121 cases were included in the final analysis. We found that increased risk of all‐cause dementia could be predicted by elevated total cholesterol (TC) (RR = 1.13, 95% CI 1.04–1.22). When looking at dementia subtypes, we also observed high TC and triglycerides (TG) may increase the future risk of Alzheimer's disease (AD), with a pooled RR of 1.13 (95% CI: 1.06–1.21) and 1.10 (95% CI: 1.04–1.15) respectively. Moreover, a dose–response analysis revealed a linear association between TC or TG and the risk of AD, with a pooled RR of 1.09 (95% CI: 1.02–1.16) and 1.12 (95% CI: 1.05–1.21) for per 3‐mmol/L increment in TC and TG, respectively.ConclusionsCurrent evidence suggest that every 3‐mmol/L increase in blood TC or TG is linearly associated with a 9% or 12% increase in RR of AD, supporting the notion that high TC and TG levels appear to play a causal role in the development of AD.

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Annals of Clinical and Translational Neurology

Tập 9 Số 3

296-311

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