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Updated: May 16, 2026

Using Retinal Imaging to Study Dementia
Published on: November 6, 2017
Atherosclerotic risk factors, vascular cognitive impairment, and Alzheimer disease
Jason C Kovacic1, Valentin Fuster
1The Zena and Michael A. Wiener Cardiovascular Institute, Mount Sinai School of Medicine, New York, NY, USA.
Insights
Vascular factors significantly contribute to Alzheimer dementia through various brain insults beyond major strokes. Understanding these links is crucial for diagnosing and treating cognitive impairment.
Area of Science:
- Neurology
- Neuroscience
- Vascular Biology
Background:
- Vascular factors' role in Alzheimer dementia recognized for over a century.
- Recent advances illuminate complex brain-vascular relationships.
- Vascular cognitive impairment is a distinct entity of neurological insults.
Purpose of the Study:
- To review the evidence linking atherosclerotic risk factors, brain function, and Alzheimer disease.
- To examine subtle vascular pathologies contributing to cognitive impairment.
- To provide a comprehensive overview of brain-vascular interactions in dementia.
Main Methods:
- Critical examination of emerging scientific literature.
- Synthesis of research on vascular contributions to cognitive decline.
- Analysis of studies on risk factors and brain pathology.
Main Results:
- Vascular cognitive impairment encompasses more than major strokes.
- Subtle pathologies like white-matter changes and blood-brain barrier compromise are significant.
- Atherosclerotic risk factors are increasingly linked to Alzheimer disease progression.
Conclusions:
- Vascular factors are integral to the development of Alzheimer dementia.
- A multifaceted approach considering vascular health is essential for dementia research and treatment.
- Further research into brain-vascular interactions is warranted.
Abstract:
The involvement of vascular factors in Alzheimer dementia was first appreciated over 100 years ago. Recently, significant advances in our understanding of these brain-vascular relationships have taken place. Vascular cognitive impairment is now recognized as a distinct group of interrelated vascular-based neurological insults that can accumulate and lead to dementia. Importantly, the pathology of vascular cognitive impairment extends far beyond brain destruction wrought by major stroke. Other subtle changes may also arise that contribute to vascular cognitive impairment and dementia, including subclinical stroke, white-matter changes such as hyperintensities and lipohyalinosis, small lacunar infarcts, cerebral hypoperfusion, and compromise of the blood-brain barrier. In this review we critically examine the emerging body of evidence that relates atherosclerotic risk factors, brain functioning, and Alzheimer disease.
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