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Updated: Jun 10, 2026

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
The effects of hypertension and body mass index on cognition in schizophrenia
Joseph I Friedman1, Sylvan Wallenstein, Erin Moshier
1Department of Psychiatry, Mount Sinai School of Medicine, Box 1230, One Gustave L. Levy Place, New York, NY 10029, USA. jfriedman1@rcn.com
Insights
Vascular risk factors like hypertension negatively impact cognition in schizophrenia patients. Treating these factors may improve cognitive function in this population.
Area of Science:
- Neuroscience
- Psychiatry
- Cardiology
Background:
- Schizophrenia patients have a high prevalence of cardiovascular risk factors.
- These risk factors are linked to cognitive decline and dementia.
- The impact of vascular risk factors on schizophrenia cognition is understudied.
Purpose of the Study:
- To investigate if vascular risk factors affect cognitive impairments in schizophrenia.
- To compare the effects of vascular risk factors on cognition in schizophrenia versus non-psychiatric subjects.
Main Methods:
- Compared 100 schizophrenia patients and 53 comparison subjects.
- Assessed cognitive performance using 2x2 matrices based on vascular risk factors and group.
Main Results:
- Hypertension significantly impaired immediate, delayed, and recognition memory in both groups.
- Schizophrenia patients with hypertension showed worse recognition memory than controls.
- Higher body mass index was linked to poorer delayed memory, though not statistically significant.
Conclusions:
- Vascular risk factors significantly impact cognitive function in schizophrenia.
- Targeting and treating vascular risk factors may enhance cognitive outcomes for schizophrenia patients.
- Addressing undertreated vascular risk factors is crucial for improving schizophrenia patient cognition.
Objective:
In recent years there has been a greater appreciation of the elevated prevalence of cardiovascular risk factors in the schizophrenia population and the liability some treatments have for their development. These vascular risk factors are in turn important risk factors in the development of dementia and more subtle cognitive impairments. However, their impact on the cognitive functions of patients with schizophrenia remains underexplored. The authors investigated whether vascular risk factors influence the cognitive impairments of schizophrenia and whether their effects on cognition in schizophrenia are different from those observed in nonpsychiatric comparison subjects.
Method:
The authors compared 100 patients with schizophrenia and 53 comparison subjects on cognitive test performance in 2×2 matrices composed of individual vascular risk factors and group (schizophrenia patients and comparison subjects).
Results:
Hypertension exerted a significant negative effect on immediate delayed and recognition memory in both groups. Patients with schizophrenia and hypertension were adversely affected in recognition memory, whereas comparison subjects were not. A body mass index above 25 was associated with negative effects on delayed memory in both groups, although the association fell short of statistical significance.
Conclusions:
Given that patients with schizophrenia have a higher prevalence of vascular risk factors than the general population and are undertreated for them, treatment of these risk factors may significantly improve cognitive outcome in schizophrenia.
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