[Status and dietary factor correlations of metabolic syndrome in elderly aged 65 years and above in rural Beijing in 2023].

Objective: To explore the prevalence of metabolic syndrome(MS) and its association with dietary factors in elderly people aged 65 years and above in rural Beijing.

Methods: From May to June 2023, 600 elderly aged 65 and above were selected in Daxing District of Beijing using multi-stage cluster random sampling. After informed consent, basic information, physical status, dietary status, and nutritional and biochemical indicators were obtained. Composition ratios were used to describe the sample composition between subgroups, chi-square test was used to compare the differences in MS prevalence between the subgroups of each factor, and multivariate logistic regression was used to analyze the association between each factor and MS.

Results: A total of 596 valid subjects were included in this study, including 249 males(41.8%) and 347 females(58.2%). The total prevalence of MS was 72.5%(n=432), and the number of the subjects with 3 MS components was 226(37.9%). In addition, the composition ratio of total subjects with all the MS components was 9.1%(n=54). The composition ratios of excessive intake of livestock meat, oil, salt were 63.3%(n=377), 18.0%(n=107) and 22.2%(n=132), respectively. In total subjects, after adjusted by age, education levels, family annual income, BMI, family history of hypertension and diabetes, and smoking, the positive correlations between MS and milk and eggs intake were detected. Comparing the subjects with insufficient intake, the OR of excessive/sufficient intake subjects were 3.990(95%CI 1.718-9.267) and 4.556(95%CI 1.770-11.727), respectively. For genders, only the positive correlation between MS and milk intake was detected in males(OR=6.346, 95%CI 1.223-32.932), and the positive correlations between MS and milk(OR=3.844, 95%CI 1.284-11.509) and eggs(OR=12.089, 95%CI 2.918-50.085) intake were detected in females.

Conclusion: In elderly people with a higher intake of livestock meat, cooking oil and cooking salt, excessive intake of milk and eggs increased the prevalence of MS.