Related Experiment Video
Updated: Jan 29, 2026

Assessment of Social Cognition in Non-human Primates Using a Network of Computerized Automated Learning Device ALDM Test Systems
Published on: May 5, 2015
Systemic inflammation during midlife and cognitive change over 20 years: The ARIC Study
Keenan A Walker1, Rebecca F Gottesman2, Aozhou Wu2
1From the Departments of Neurology (K.A.W., R.F.G.) and Epidemiology (R.F.G., A.W., A.L.G., E.S.), Johns Hopkins University, Baltimore, MD; Department of Neurology (D.S.K.), Mayo Clinic, Rochester, MN; Department of Medicine (T.H.M., B.G.W.), Division of Geriatrics, University of Mississippi Medical Center, Jackson. Kwalke26@jhmi.edu.
Midlife systemic inflammation, measured by composite scores and C-reactive protein (CRP), is linked to significant 20-year cognitive decline, particularly in memory. This suggests inflammation may drive cognitive aging.
Area of Science:
- Neuroscience
- Immunology
- Public Health
Background:
- Systemic inflammation is increasingly recognized as a factor in age-related diseases.
- Understanding the long-term impact of midlife inflammation on cognitive health is crucial for preventative strategies.
Purpose of the Study:
- To investigate the association between systemic inflammation in midlife and cognitive decline over a 20-year period.
- To determine if specific inflammatory markers predict the rate and domains of cognitive change.
Main Methods:
- Utilized data from the Atherosclerosis Risk in Communities study.
- Measured midlife inflammation using a composite score of 4 blood biomarkers and C-reactive protein (CRP).
- Assessed cognitive function (memory, executive function, language) over 20 years in 12,336 participants.
Main Results:
- Increased midlife inflammation composite score and CRP levels were significantly associated with greater 20-year cognitive decline.
- Higher inflammation quartiles correlated with steeper cognitive decline, especially in memory.
- Results remained robust after adjusting for demographic, vascular, and comorbidity factors.
Conclusions:
- Midlife systemic inflammation appears to play an early pathogenic role in driving cognitive decline.
- These findings suggest inflammation is a key factor in cognitive aging trajectories leading into older adulthood.
Related Concept Videos
Cognitive Dissonance
Inflammation
Le Chatelier's Principle: Changing Volume (Pressure)
Global Climate Change
Net Change Theorem
Rates of Change

