Hypertension and Dementia: Epidemiological and Experimental Evidence Revealing a Detrimental Relationship

Area of Science:

• Neuroscience
• Cardiovascular Science
• Public Health

Background:

• Hypertension and dementia are significant global health concerns, particularly in aging populations.
• Traditionally viewed as separate conditions, emerging evidence highlights a strong link between hypertension and dementia.
• Hypertension's effects on the brain are increasingly recognized as critical to understanding dementia.

Purpose of the Study:

• To review and clarify the pathophysiological relationship between hypertension and dementia.
• To examine how hypertension impacts brain structure and function.
• To synthesize current literature on the mechanisms linking hypertension to dementia.

Main Methods:

• Literature review of epidemiological, clinical, and experimental studies.
• Analysis of research on hypertension's effects on cerebral vasculature and homeostasis.
• Examination of studies investigating amyloid-beta (Aβ) clearance and deposition in relation to hypertension.

Main Results:

• Hypertension negatively affects brain homeostasis, impacting both structure and function.
• Chronic high blood pressure impairs cerebral vasculature, hindering amyloid-beta clearance and promoting deposition.
• Hypertension-induced cerebral arterial stiffening and microvascular dysfunction contribute to dementia pathophysiology.

Conclusions:

• Hypertension is a critical factor in dementia development and progression.
• Understanding the pathophysiological links is crucial for developing preventative and therapeutic strategies.
• Further research is needed to fully elucidate the complex interplay between hypertension and dementia.