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Cognitive debt and Alzheimer's disease
Natalie L Marchant1, Robert J Howard1
1Department of Old Age Psychiatry, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK.
Journal of Alzheimer'S Disease : JAD
|November 2, 2014
Summary
We introduce Cognitive Debt, a concept explaining how negative thinking and stress increase Alzheimer's disease (AD) risk. Targeting repetitive negative thinking may offer new avenues for AD prevention and intervention.
Area of Science:
- Neuroscience
- Psychology
- Gerontology
Background:
- Alzheimer's disease (AD) risk is linked to psychological factors like depression, anxiety, and stress.
- These factors may contribute to AD through a shared mechanism, termed Cognitive Debt.
- Repetitive negative thinking (RNT) is a potential driver of Cognitive Debt.
Purpose of the Study:
- To propose the concept of Cognitive Debt.
- To explore RNT as a mechanism driving Cognitive Debt.
- To investigate the interaction of Cognitive Debt, RNT, and APOE-ε4 genotype in AD risk.
Main Methods:
- Conceptual model development based on existing evidence.
- Review of literature on psychological factors, stress response, and AD.
- Exploration of RNT as a transdiagnostic cognitive process.
Main Results:
- Cognitive Debt is proposed as a framework for understanding psychological contributions to AD vulnerability.
- RNT is identified as a key behavioral process potentially leading to Cognitive Debt.
- Cognitive Debt may increase AD risk independently of traditional pathology, potentially interacting with APOE-ε4.
Conclusions:
- The Cognitive Debt model offers a novel perspective on AD predisposition.
- Modulating RNT presents a potential target for early intervention and risk reduction in AD.
- Further research is needed to validate the Cognitive Debt model and its implications for AD prevention.
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