Association between Chinese Healthy Eating Index（CHEI） and Metabolic Syndrome（MetS） in middle-aged and elderly Chinese adults: a cross-sectional study
摘要：Objective Balanced diet is an important preventive measure for Metabolic Syndrome（MetS）. This study aimed to evaluate the association between Chinese Healthy Eating Index（CHEI） and MetS. Methods A total of 2171 Chinese adults（685 men and 1486 women） aged ≥40 years were included in this cross-sectional study. Dietary data were assessed using a previously validated 3-day food record. The CHEI was developed based on the updated Dietary Guidelines for Chinese（2016） and was proved to be capable of recognizing differences in diet quality among the Chinese. Anthropometric（waist）, biochemical measurements（Fasting plasma glucose, 2-hour plasma glucose after oral glucose tolerance test, triglyceride and high density lipoprotein cholesterol（HDL-C）） and blood pressure were collected. MetS was defined according to Chinese Guidelines on Prevention and Treatment of Dyslipidemia in Adults（2016）. Results After adjustment for potential confounders including age, sex, energy intake and regular exercise, participants in the highest quartile of CHEI were 39% lower odds of the MetS, compared to those in the lowest quartile [OR（95%CI）: 0.61（0.45-0.83）]. Participants in the highest quartile of CHEI were 25% less risk of hypertriglyceridemia [OR（95%CI）: 0.75（0.57-0.99）], 29% less risk for hypertension [OR（95%CI）: 0.71（0.53-0.94）] and 40% less risk for enlarged waist circumference [OR（95%CI）: 0.60（0.46-0.80）]. There was no significant association between CHEI score and risk of abnormal glucose homeostasis（P=0.12） and low HDL-C levels（P=0.96）. Conclusions The results indicated there might be a significant inverse association between CHEI and MetS and some of its components. Prospective studies are needed to confirm these findings.