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Dietary patterns derived by factor analysis are associated with cognitive function among a middle-aged and elder
Feng-Na Yu1, Nai-Qi Hu2, Xun-Lan Huang1
1Department of burns and orthopedics, Linyi People's Hospital, Number 27, east section of Jiefang Road, Lanshan District, Linyi 276000, Shandong, the People's Republic of China.
Psychiatry Research
|September 15, 2018
Summary
A Western-style diet is linked to higher cognitive impairment risk in older Chinese adults, while a diet rich in grains, fruits, and vegetables is associated with a decreased risk.
Area of Science:
- Nutrition and Aging
- Cognitive Health Research
- Epidemiology
Background:
- Dietary patterns significantly influence health outcomes, particularly in aging populations.
- Understanding diet-cognition links is crucial for public health interventions.
- Previous research suggests varying impacts of different dietary patterns on cognitive function.
Purpose of the Study:
- To investigate the association between empirically derived dietary patterns and cognitive function in Chinese adults aged 45 and older.
- To identify specific dietary patterns linked to cognitive impairment in this demographic.
Main Methods:
- Factor analysis (principal component analysis) identified dietary patterns from semi-quantitative food frequency questionnaires (FFQs).
- Binary logistic regression models assessed the odds ratio (OR) and 95% confidence interval (CI) for cognitive impairment across dietary pattern quartiles.
- 1676 Chinese adults from Linyi participated, completing surveys and cognitive screening tests.
Main Results:
- Three distinct dietary patterns emerged: traditional Chinese, Western-style, and grains-fruits-vegetable.
- Higher consumption of the Western-style pattern correlated with an increased odds ratio for cognitive impairment.
- Conversely, higher intake of the grains-fruits-vegetable pattern was associated with a lower odds ratio for cognitive impairment.
Conclusions:
- The Western-style dietary pattern is associated with an elevated risk of cognitive impairment in middle-aged and older Chinese adults.
- A diet emphasizing grains, fruits, and vegetables demonstrates a protective association, reducing the risk of cognitive impairment.
- These findings highlight the importance of dietary choices in maintaining cognitive health during aging.
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