首页|Seasonal variation in dietary intake and its association with obesity-related chronic diseases in northeast China
Seasonal variation in dietary intake and its association with obesity-related chronic diseases in northeast China
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Objective:The objective of this study was to assess seasonal changes in dietary and nutrient intake of residents(18-75 years old)in Northeast China during summer and winter,and to explore the associations between fatty acids,phytosterols,and the prevalence of obesity-related chronic diseases,particularly obesity,hyperlipidemia,and NAFLD.Methods:A total of 4773 participants from the Internet-based Dietary Questionnaire for Chinese(IDQC)were included in this study.Dietary intake information was collected using a validated food frequency questionnaire.Student's t-test or Mann-Whitney U-test was used to analyze continuous variables,while Chi-squared tests were used to compare categorical variables.Multivariable logistic regression was employed to assess the relationship between fatty acids,phytosterols,and obesity-related chronic diseases.Results:The mean consumption of legumes,vegetables,fruits,nuts,dairy products,fish,condiments,energy,protein,fat,and carbohydrate differed significantly between summer and winter(P<0.05).Significant inverse associations were found between both fatty acids and phytosterols and obesity-related chronic diseases in multivariate adjusted models.Summer polyunsaturated fatty acid(PUFA)intake was negatively associated with the prevalence of hyperlipidemia(Q4,OR,0.515;95%CI,0.283-0.921;P<0.05)and non-alcoholic fatty liver disease(NAFLD)(Q4,OR,0.331;95%CI,0.176-0.599;P<0.001).Phytosterols intake was negatively associated with the prevalence of obesity(Q4,OR,0.603;95%CI,0.414-0.873;P<0.05),hyperlipidemia(Q4,OR,0.420;95%CI,0.233-0.731;P<0.001),and NAFLD(Q4,OR,0.206;95%CI,0.111-0.360;P<0.001)during the summer.Conclusions:Higher PUFA intake was associated with a lower prevalence of obesity,hyperlipidemia,and NAFLD.Phytosterol intake was inversely associated with the prevalence of hyperlipidemia and NAFLD.These findings suggest that the associations between PUFA and phytosterols and the prevalence of obesity-related chronic diseases may be influenced by seasonal differences in food intake.
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