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Recent research suggests that the cognitive advantages gained from enriching and fulfilling life experiences can be diminished by both physical and psychological stress. Chronic or intense stress is linked to difficulties in participating in recreational and physical activities, decreased social engagement, and a heightened risk of developing dementia.
Stress could be working against your attempts to strengthen and maintain cognitive reserve. Research has indicated that individuals with higher cognitive reserve index (CRI) scores tend to experience slower cognitive decline, even in cases of Alzheimer’s disease. These scores are determined by engaging in mentally stimulating activities, achieving higher levels of education, pursuing complex careers, staying physically active, and fostering strong social connections.
The research investigated the relationship between CRI scores, cognitive function, and Alzheimer’s disease biomarkers in 113 participants from a memory clinic. The study also examined the impact of perceived stress, alongside physiological markers of psychological stress, specifically saliva cortisol levels.
The researchers found that while greater cognitive reserve enhanced cognitive function, physiological stress appeared to weaken this effect. Higher CRI scores were linked to improved working memory in individuals with normal cortisol levels, but this benefit was absent in those with elevated cortisol levels, indicating high psychological stress.
To preserve healthy cognitive function, people can use stress management techniques like relaxation exercises, meditation, physical exercise, or therapy to lower the risk of cognitive decline. Engaging in intellectually challenging activities helps strengthen neural connections and boosts abilities in memory, problem-solving, and communication. It is essential to recognize the effect of stress on cognitive function.
To view the original scientific study click below:
Cognitive reserve, cortisol, and Alzheimer's disease biomarkers: A memory clinic study
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