Association of waist circumference, waist-to-height ratio and dietary factors with lipid

Objective To explore the association of dietary, waist circumference(WC) and waist-to-height ratio(WHtR) with dyslipidemia. Methods Combined sampling survey with semi-quantitative food frequency survey, partial correlation, t test, chi-square test and logistic regression analysis were used to analyze the relationship of diet, WC and WHtR with lipid. Results Partial correlation analysis showed that intakes of grain, total energy, fat and total cholesterol(TC) were positively correlated with cholesterol level. The intakes of aquatic product, zinc, selenium and cuprum were inversely correlated with triglyceride(TG) level (all P<0.05). When the WC or WHtR was abnormal, the TG level was greater than the normal, while the prevalence was also higher (all P<0.05), and when the WC was abnormal, the TC level and the prevalence for female were greater than the normal, the difference were statistically significant (t=-2.12, P=0.035, χ²=7.93,P=0.005). 1-SD of WC and WHtR would give rise to an increase of 26% and 43% risk of hypercholesterolemia, 30% and 35% risk of hypertriglyceridemia. Conclusions Controlling grain, total energy, fat, cholesterol and increasing vegetables, aquatic product, vitamin C, zinc, selenium and cuprum intake can reduce the risk of dyslipidemia. Besides, WC and WHtR can be used as monitoring indicators for early detection and prevention of dyslipidemia.