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Introduction <p>Studies on the association between lipid levels and lipid-lowering treatment and the risk of dementia and/or cognitive decline (CD) have shown conflicting results and are few in individuals with type 2 diabetes (T2D). The aim was to evaluate the relationship of baseline LDL cholesterol levels and statin treatment with the development of dementia/CD in patients with T2D from the Action in Diabetes and Vascular Disease: Preterax and Diamicron Modified Release Controlled Evaluation trial.</p> Methods <p>Dementia was diagnosed using the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV), and CD was defined as at least a 3-point decrement in the Mini Mental State Examination score. Exposures were baseline LDL cholesterol levels, statin treatment at baseline, and statin treatment initiation during the first 18&#xa0;months of follow-up. Multinomial logistic regression was used to estimate the odds ratio (OR) and 95% CI for the composite of dementia/CD.</p> Results <p>Of 11,140 participants, 1827 (16.4%) developed dementia/CD over the 5-year follow up. The OR (95% CI) of dementia/CD were 1.06 (1.00–1.14) per standard deviation higher in baseline LDL cholesterol and 0.90 (0.79–1.03) for participants with vs without statin treatment.</p> Conclusion <p>We observed an association between LDL levels, but not statin treatment, and incident dementia/CD. Although causality cannot be determined by our study, the results are in line with multiple randomised controlled trials. However, to understand the long-term effects of lipid levels and statin treatment on dementia/CD, studies of longer follow-up are still needed.</p>

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Lipoprotein levels and statin treatment related to dementia and cognitive decline in individuals with type 2 diabetes: an observational analysis from the ADVANCE study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月18日

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  • Peder af Geijerstam,
  • John Chalmers,
  • Miriam Pikkemaat,
  • Ruth Peters,
  • Michel Marre,
  • Giuseppe Mancia,
  • Mark Woodward,
  • Katie Harris

摘要

Introduction

Studies on the association between lipid levels and lipid-lowering treatment and the risk of dementia and/or cognitive decline (CD) have shown conflicting results and are few in individuals with type 2 diabetes (T2D). The aim was to evaluate the relationship of baseline LDL cholesterol levels and statin treatment with the development of dementia/CD in patients with T2D from the Action in Diabetes and Vascular Disease: Preterax and Diamicron Modified Release Controlled Evaluation trial.

Methods

Dementia was diagnosed using the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV), and CD was defined as at least a 3-point decrement in the Mini Mental State Examination score. Exposures were baseline LDL cholesterol levels, statin treatment at baseline, and statin treatment initiation during the first 18 months of follow-up. Multinomial logistic regression was used to estimate the odds ratio (OR) and 95% CI for the composite of dementia/CD.

Results

Of 11,140 participants, 1827 (16.4%) developed dementia/CD over the 5-year follow up. The OR (95% CI) of dementia/CD were 1.06 (1.00–1.14) per standard deviation higher in baseline LDL cholesterol and 0.90 (0.79–1.03) for participants with vs without statin treatment.

Conclusion

We observed an association between LDL levels, but not statin treatment, and incident dementia/CD. Although causality cannot be determined by our study, the results are in line with multiple randomised controlled trials. However, to understand the long-term effects of lipid levels and statin treatment on dementia/CD, studies of longer follow-up are still needed.