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Published on: April 23, 2021
Serum uric acid and cognitive function and dementia
S M Euser1, A Hofman, R G J Westendorp
1Department of Epidemiology, Erasmus University Medical Center, 3000 CA Rotterdam, The Netherlands.
Brain : a Journal of Neurology
|November 28, 2008
Summary
Higher serum uric acid levels are linked to a reduced risk of dementia and improved cognitive function in older adults. This finding emerged after accounting for cardiovascular risk factors in a large cohort study.
Area of Science:
- Neuroscience
- Gerontology
- Biochemistry
Background:
- Uric acid is a known cardiovascular disease risk factor and a potent antioxidant.
- The relationship between uric acid and cognitive decline, involving vascular and oxidative stress pathways, remains unclear.
Purpose of the Study:
- To investigate the association between serum uric acid levels and the risk of developing dementia.
- To examine the relationship between serum uric acid levels and cognitive function in older adults over time.
Main Methods:
- Prospective population-based cohort study of 4618 participants aged 55+.
- Follow-up assessment of cognitive function in a subsample (n=1724) after an average of 11.1 years.
- Statistical analyses adjusted for age, sex, and cardiovascular risk factors.
Main Results:
- Higher serum uric acid levels were associated with a decreased risk of dementia (HR 0.89 per SD increase) after adjusting for cardiovascular risk factors.
- In dementia-free participants, higher uric acid levels correlated with better global cognitive function (Z-score difference 0.04 per SD increase), executive function, and memory function.
- These cognitive benefits were observed only after controlling for cardiovascular risk factors.
Conclusions:
- Elevated serum uric acid levels are paradoxically associated with a reduced risk of dementia in older adults.
- Higher uric acid is linked to better cognitive function later in life, despite its association with cardiovascular disease.
- Further research is warranted to understand the complex role of uric acid in brain health and aging.
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