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Published on: November 6, 2017
Vascular dementia prevention: a risk factor analysis
1Department of Medicine/Neurology, University of Texas Health Science Center at San Antonio, San Antonio, Tex. 78229-3900, USA. romang@uthscsa.edu
Insights
Controlling vascular risk factors, such as hypertension, may prevent vascular dementia (VaD) and cognitive decline caused by cerebrovascular disease (CVD). Early intervention is key for brain health.
Area of Science:
- Neurology
- Cardiovascular Medicine
- Gerontology
Background:
- Cerebrovascular disease (CVD) causes brain injury, leading to cognitive decline and vascular dementia (VaD).
- CVD can exacerbate other neurodegenerative conditions like Alzheimer's disease.
- Advances in identifying and managing cardiovascular disease risk factors are crucial.
Purpose of the Study:
- To review the risk factors associated with vascular dementia (VaD).
- To emphasize the role of cerebrovascular disease (CVD) in cognitive decline.
- To highlight the potential of managing vascular risk factors for dementia prevention.
Main Methods:
- Review of existing literature on cerebrovascular disease, vascular dementia, and associated risk factors.
- Analysis of evidence from controlled clinical trials regarding risk factor management.
- Identification of established and recently identified risk factors for VaD.
Main Results:
- Key VaD risk factors include age, hypertension, diabetes, smoking, and cardiovascular history.
- Other significant risk factors identified are atrial fibrillation, hyperhomocysteinemia, and sleep apnea.
- Emerging risk factors include chronic infection and elevated C-reactive protein, especially in diabetics.
Conclusions:
- Control of vascular risk factors, particularly hypertension, is strongly suggested by clinical trials to prevent dementia.
- Managing CVD risk factors is essential for preserving cognitive function and preventing VaD.
- Further research into emerging risk factors may offer new avenues for dementia prevention strategies.
Abstract:
Brain injury from ischemic or hemorrhagic cerebrovascular disease (CVD) produces decline in cognitive functions and vascular dementia (VaD). Likewise, CVD may cause VaD from hypoperfusion of susceptible brain areas. CVD may also worsen degenerative dementias such as Alzheimer's disease. Significant advances have been made in the identification and control of risk factors for stroke and cardiovascular disease. The main risk factors for VaD include age, hypertension and absence of antihypertensive medication, diabetes, cigarette smoking, history of cardiovascular disease (coronary heart disease, congestive heart failure, peripheral vascular disease), atrial fibrillation, left ventricular hypertrophy, hyperhomocysteinemia, orthostatic hypotension, cardiac arrhythmias, hyperfibrinogenemia, and sleep apnea. Recently identified risk factors include chronic infection and elevation of C-reactive protein, particularly in patients with diabetes. Evidence from controlled clinical trials strongly suggests that control of vascular risk factors, in particular hypertension, could prevent the development of dementia.
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