Blood pressure-related cognitive decline: does age make a difference?

Area of Science:

• Neuroscience
• Cardiovascular Health
• Cognitive Aging

Background:

• Prospective and cross-sectional studies suggest an inverse relationship between blood pressure and cognitive performance.
• Previous findings were primarily observed in older adult populations.

Purpose of the Study:

• To investigate the longitudinal association between baseline blood pressure and cognitive decline in both younger and older adults.
• To determine if young adults are susceptible to blood pressure-related cognitive decline.

Main Methods:

• A 20-year longitudinal study involving 529 participants across two age groups (18-46 and 47-83 years).
• Cognitive performance assessed using the Wechsler Adult Intelligence Scale, with scores analyzed via factor analysis.
• A 2-stage growth curve modeling approach was employed to analyze cognitive change over time.

Main Results:

• Higher baseline systolic blood pressure, diastolic blood pressure, and mean arterial pressure were significantly associated with cognitive decline.
• Elevated blood pressure categories, per Joint National Committee guidelines, also predicted decline in Visualization/Fluid abilities.
• These associations were consistent in both younger and older age groups.

Conclusions:

• Elevated blood pressure is a significant predictor of longitudinal cognitive decline, specifically in Visualization/Fluid abilities.
• Young adults are as vulnerable to the detrimental effects of blood pressure on cognitive function as older adults.
• These findings highlight the importance of blood pressure management across the lifespan for maintaining cognitive health.