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Published on: June 2, 2023
[Blood pressure and Alzheimer's disease]
1Service de Neurologie et Centre de la mémoire, CHRU, Lille. pasquier@chrulille.fr
Insights
High blood pressure may increase Alzheimer's disease (AD) risk. Managing hypertension early could potentially prevent or delay AD onset, suggesting a link between stroke risk factors and AD.
Area of Science:
- Neurology
- Cardiovascular Medicine
- Gerontology
Context:
- Alzheimer's disease (AD) diagnosis often excludes patients with cerebrovascular lesions.
- This exclusion may underestimate the connection between stroke risk factors and AD.
- Arterial hypertension is a primary risk factor for stroke.
Purpose:
- To review the literature on the relationship between blood pressure and Alzheimer's disease.
- To explore the potential links between hypertension and cognitive decline.
Summary:
- Cognitive performance is generally lower in individuals with arterial hypertension.
- A longitudinal study indicated that Alzheimer's patients (aged 79-85) had higher blood pressure 10-15 years prior.
- Blood pressure often declines 1-2 years before AD onset.
Impact:
- The link between hypertension and AD may involve a combination of AD pathology, white matter changes, and cerebrovascular lesions.
- Early management of arterial hypertension might offer a strategy to prevent or postpone Alzheimer's disease.
- Ongoing drug trials are investigating the potential benefits of hypertension treatment for AD prevention.
Abstract:
To fulfill criteria for probable Alzheimer's disease (AD), patients must be free of cerebrovascular lesions that may explain the cognitive decline. These criteria probably lead to an underestimation of the links between risk factors for stroke and AD. However, the association between stroke and AD is probably more frequent than expected. Arterial hypertension is the most important risk factor for stroke. The aim of this study is to evaluate, from the literature, the possible relationship between blood pressure and AD. Cognitive performances are usually lower in patients with arterial hypertension. A longitudinal study revealed that patients with AD aged 79-85 are more likely to have had higher values of blood pressure 10 to 15 years earlier, and they usually have a spontaneous decline of blood pressure beginning 1 or 2 years before the onset of AD. The relationship between arterial hypertension and AD is probably due to the summation of Alzheimer pathology, white matter changes and cerebrovascular lesions. A possible consequence of these findings would be to prevent, or to postpone, AD by an early treatment of arterial hypertension. This is currently evaluated in drug trials.
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