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Updated: Aug 28, 2025

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
Hypertension, Neurovascular Dysfunction, and Cognitive Impairment
Monica M Santisteban1, Costantino Iadecola1, Daniela Carnevale2,3
1Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY (M.M.S., C.I.).
Insights
Hypertension, or high blood pressure, is a major risk factor for cognitive decline and dementia. Understanding its effects on the brain is crucial for developing effective treatments to preserve brain health in aging populations.
Area of Science:
- Neuroscience
- Cardiovascular Medicine
- Gerontology
Background:
- Hypertension is a prevalent condition in adults and the elderly, significantly increasing the risk of vascular cognitive impairment and dementia.
- Chronic high blood pressure damages cerebral vasculature, causing microvascular dysfunction, impaired blood flow, and neuroinflammation.
- Hypertension may also contribute to Alzheimer's pathology, including amyloid deposition.
Purpose of the Study:
- To critically evaluate current evidence on the mechanisms linking hypertension to cognitive decline.
- To assess the potential of hypertension treatment in preventing cognitive deterioration.
- To identify knowledge gaps regarding optimal blood pressure thresholds and antihypertensive drug efficacy.
Main Methods:
- Review of experimental studies in animal models to elucidate molecular and cellular mechanisms.
- Analysis of human studies utilizing advanced brain imaging and behavioral phenotyping.
- Parallel analysis of data from animal models and human subjects for translational insights.
Main Results:
- Hypertension demonstrably impairs cerebral blood supply and brain health through various pathways.
- Animal models offer significant mechanistic insights into hypertension's neurovascular effects.
- Advances in imaging and behavioral analysis are beginning to clarify human impacts.
Conclusions:
- Further research is needed to determine effective hypertension management strategies for cognitive preservation.
- Translational research, bridging animal models and human studies, is essential for progress.
- Understanding the precise relationship between hypertension and dementia is critical for public health.
Abstract:
Hypertension affects a significant proportion of the adult and aging population and represents an important risk factor for vascular cognitive impairment and late-life dementia. Chronic high blood pressure continuously challenges the structural and functional integrity of the cerebral vasculature, leading to microvascular rarefaction and dysfunction, and neurovascular uncoupling that typically impairs cerebral blood supply. Hypertension disrupts blood-brain barrier integrity, promotes neuroinflammation, and may contribute to amyloid deposition and Alzheimer pathology. The mechanisms underlying these harmful effects are still a focus of investigation, but studies in animal models have provided significant molecular and cellular mechanistic insights. Remaining questions relate to whether adequate treatment of hypertension may prevent deterioration of cognitive function, the threshold for blood pressure treatment, and the most effective antihypertensive drugs. Recent advances in neurovascular biology, advanced brain imaging, and detection of subtle behavioral phenotypes have begun to provide insights into these critical issues. Importantly, a parallel analysis of these parameters in animal models and humans is feasible, making it possible to foster translational advancements. In this review, we provide a critical evaluation of the evidence available in experimental models and humans to examine the progress made and identify remaining gaps in knowledge.
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