Relationships between dietary intake and cognitive function level in Korean elderly people

Area of Science:

• Gerontology
• Nutritional Science
• Cognitive Health

Background:

• Cognitive decline is a significant concern in aging populations.
• Dietary patterns play a crucial role in maintaining cognitive function.
• Understanding these relationships in specific ethnic groups, like elderly Koreans, is important.

Purpose of the Study:

• To investigate the association between dietary intake and cognitive performance in Korean elderly individuals.
• To identify specific nutrients and food groups linked to cognitive function in this demographic.

Main Methods:

• A cross-sectional study involving 210 men and 239 women aged 60+ in Korea.
• Data collected via 24-hour dietary recalls, anthropometric measurements, and cognitive tests (Kwon's Mini-Mental State Examination for Koreans - MMSE-K).
• Statistical analyses were performed to examine relationships between dietary variables and cognitive scores.

Main Results:

• The prevalence of poor cognitive function (MMSE-K score ≤ 19) was 22.3%, higher in women (31.0%) than men (12.3%).
• Elderly individuals with poor cognitive function showed significantly lower intakes of various food groups (cereals, vegetables, fruits, milk) and key nutrients (energy, protein, fat, carbohydrates, vitamins, minerals).
• Cognitive ability was negatively associated with age and positively with education level. Female cognitive scores strongly correlated with overall food intake and nutrient consumption.

Conclusions:

• Sufficient intake and variety of foods are crucial for preserving cognitive function in elderly Koreans.
• Dietary interventions focusing on nutrient-rich foods may help mitigate cognitive decline in this population.
• Gender-specific dietary patterns may influence cognitive health outcomes in older adults.