The effects of statins on prevention of stroke and dementia: a review
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Updated: May 20, 2026

Differential Effects of Lipid-lowering Drugs in Modulating Morphology of Cholesterol Particles
Published on: November 10, 2017
Arthur R Menezes1, Carl J Lavie, Richard V Milani
1Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner, Clinical School-The University of Queensland School of Medicine, New Orleans, Louisiana, USA.
Insights
Statins significantly reduce stroke risk, particularly in older adults. These cholesterol-lowering drugs also offer neuroprotective benefits, though their role in preventing dementia remains under investigation.
Area of Science:
- Neurology
- Cardiovascular Medicine
- Pharmacology
Background:
- Stroke is a leading cause of death and healthcare expenditure, with prevalence increasing with age.
- Statins have demonstrated efficacy in both primary and secondary stroke prevention over the past two decades.
- The relationship between low-density lipoprotein cholesterol and cerebrovascular accidents (CVA) is well-established, with statins showing beneficial effects.
Purpose of the Study:
- To examine the role of statins in stroke prevention.
- To explore the lipid-lowering and cholesterol-independent pleiotropic effects of statins.
- To review the current evidence on statin use for dementia prevention, especially vascular dementia.
Main Methods:
- Review of clinical studies and data on statin use for stroke prevention.
- Analysis of research on the mechanisms of action of statins, including lipid-lowering and pleiotropic effects.
- Evaluation of evidence regarding statins and their impact on dementia, particularly vascular causes.
Main Results:
- Substantial data support statin use for reducing stroke incidence.
- Statins lower low-density lipoprotein cholesterol, a key factor in cerebrovascular accidents.
- Statins possess cholesterol-independent pleiotropic properties contributing to neuroprotection.
Conclusions:
- Statins are effective in reducing the risk of stroke.
- Pleiotropic effects of statins may offer additional neuroprotective benefits.
- The role of statins in dementia prevention, particularly vascular dementia, requires further investigation.
Abstract:
Stroke is the third leading cause of death in the United States and places a heavy toll on health care spending, especially in the elderly population. The prevalence of stroke increases with increasing age. Over the last 2 decades, there have been substantial data supporting the use of statins in the primary, as well as secondary, prevention of stroke. Although most of these studies were designed to evaluate cerebrovascular accidents (CVA) only as secondary endpoints, the data show a significant reduction in strokes associated with statin use. There have been numerous studies that have demonstrated the relationship between serum cholesterol levels, specifically low-density lipoprotein cholesterol, on CVA and the beneficial effects of statins in this setting. Furthermore, in addition to the lipid-lowering properties of statins, these drugs have also been shown to possess cholesterol-independent pleotropic properties that have been associated with neuroprotection. Finally, the role of statins for the prevention of dementia is still highly debatable. We examine the role of this class of drugs in the setting of dementia, particularly from vascular causes and stroke.
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