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The Nordic diet and cognition--The DR's EXTRA Study
The British Journal of Nutrition
|June 25, 2015
Summary
The Nordic diet may support cognitive function in healthy older adults. This study found a positive association between the Nordic diet and cognitive performance over four years, particularly in individuals without cognitive impairment.
Area of Science:
- Gerontology
- Nutritional Science
- Cognitive Neuroscience
Background:
- Aging populations are experiencing a rise in dementia prevalence.
- Identifying modifiable lifestyle factors for cognitive impairment prevention is crucial.
- The Nordic diet, known for cardiovascular benefits, has not been extensively studied for its impact on cognition.
Purpose of the Study:
- To investigate the cross-sectional and longitudinal associations between the Nordic diet and cognitive function.
- To analyze cognitive changes over a 4-year follow-up period in relation to baseline Nordic diet adherence.
- To explore these associations in a population-based sample of older adults.
Main Methods:
- A population-based random sample of 1140 men and women aged 57-78 years was analyzed.
- The Nordic Diet Score was calculated from 4-day food records.
- Cognitive function was assessed using the Consortium to Establish a Registry for Alzheimer's Disease (CERAD) battery and Mini-Mental State Examination (MMSE).
Main Results:
- A higher Nordic diet score was positively associated with Verbal Fluency and Word List Learning at 4 years.
- In individuals without baseline cognitive impairment, the Nordic diet score also correlated positively with CERAD-Total Score and MMSE.
- These specific associations were attenuated after adjusting for energy intake.
Conclusions:
- The Nordic diet may have a beneficial association with cognitive function in individuals with normal cognition.
- Further research is needed to elucidate the mechanisms, potentially involving energy intake, linking the Nordic diet to cognitive health.
- Dietary patterns like the Nordic diet warrant consideration as a potential strategy for maintaining cognitive function in aging populations.
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