Is there an association between mild cognitive impairment and dietary pattern in chinese elderly? Results from a cross-sectional population study

Abstract

BackgroundDiet has an impact on cognitive function in most prior studies but its association with Mild Cognitive Impairment (MCI) in Chinese nonagenarians and centenarians has not been explored.Methods870 elder dujiangyan residents aged 90 years or more in 2005 census were investigated at community halls or at home. They underwent the Mini-Mental State Examination (MMSE) for assessment of cognitive function and replied to our questionnaire comprised of 12 food items and other risk factors. MCI was defined by two steps: first, subjects with post-stroke disease, Alzheimer's disease or Parkinson's disease and MMSE< 18 were excluded; and then subjects were categorized as MCI (MMSE scores between 19 and 24) and normal (MMSE scores between 25 and 30). Logistic regression models were used to analyze the association between diet and the prevalence of MCI. The model was adjusted for gender, ages, systolic blood pressure, diastolic blood pressure, body mass index, fasting plasma glucose, total cholesterol, triglycerides, high-density lipoprotein cholesterol and low-density lipoprotein cholesterol, smoking habits, alcohol and tea consumption, educational levels and exercise in baseline dietary assessment.Results364 elderly finally included, 108 (38.71%) men and 171 (61.29%) women of whom were classified as MCI. A significant correlation between MCI and normal in legume was observed (OR, 0.84; 95%CI, 0.72-0.97), and also in animal oil (any oil that obtained from animal substances) (OR, 0.93; 95%CI, 0.88-0.98). There was no statistical difference of other food items between normal and MCI.ConclusionsAmong Chinese nonagenarians and centenarians, we found there were significant associations between inadequate intake of legume and animal oil and the prevalence of MCI. No significant correlation between other food items and the prevalence of MCI were demonstrated in this study.

Association between Chronic Bronchitis and Cognitive Impairment in Elderly Chinese Subjects Over 90 Years of Age

“…[7][8]10] The main difference between the present study and the original analyses and report on the PLAD study was that the original report focused on minor cognitive impairment, and excluded the normal and the dementia group. [9] The present study found no statistically significant differences in terms of chronic bronchitis(P<0.001)between the two groups. It has been reported that no statistically significant association was found between the two groups in terms of chronic bronchitis after adjusting for independent variable factors (sex, age, education level and major occupation before 60 years of age).…”

Association between cognitive impairment and eating habits in elderly Chinese subjects over 90 years of age

“…The MMSE score level was set according to the fact that most participants in a previous PLAD study had no formal education. 9,18,20 The main difference between the present study and the original analyses and report on the PLAD study was that the original report focused on minor cognitive impairment, and excluded the normal and the dementia group. 18 The present study found no statistically significant differences in terms of food intake, nutritional content of each food item, frequency of consuming breakfast, main cooking methods or eating habits between the two groups, after adjusting for independent variable factors (sex, age, education level and major occupation before 60 years of age).…”

“…18 The study aimed to include all nonagenarians and centenarians in the area of Dujiangyan, although subjects with post-stroke related disease or Parkinson's disease, or who did not complete the MMSE test, were excluded. The study protocol was approved by the research Ethics Committee of Sichuan University.…”

“…19 Subjects were categorized as follows: cognitive impairment, scores <17; normal, scores between 17 and 30. 9,18,20 Assessment of eating habits All participants completed a questionnaire relating to eating habits, including questions on: food intake (very satiated, 70-80% satiated, 50% satiated, variable); component of each food item (primarily vegetarian, primarily meat, completely vegetarian); frequency of breakfast intake (daily, usually [>three times per week], occasionally [<three times per week], never); main cooking methods (fried, steamed, mixed cooking, others); speed of eating (slow, moderate, fast); eating habits (sweets preference, spicy hot preference, other preference, no preference).…”

Dietary patterns are associated with general and central obesity in elderly living in a Brazilian city

“…6,7 Diet and nutrition have been studied as factors for promoting and maintaining health throughout life. 8 Dietary patterns have been associated with non-communicable chronic diseases, 9-13 mortality, [14][15][16] cognitive function, 17 obesity 10,12,[18][19] and the protective effect on being overweight. 14,18,[20][21] Unhealthy dietary patterns (sugar, fat, processed foods and refined grains) can be found in overweight younger adults 20,22 as well as in the elderly.…”