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Objective@#To investigate the association between dietary selenium intake and hypertension among Zhejiang residents .@*Methods@#By multistage stratified random sampling method,four urban sites and two rural sites out of Zhejiang Province,four communities or villages out of each site,then 20 households out of each community or village were selected,and all the family members of the selected households were recruited as participants. The questionnaire of Chinese Health and Nutrition Survey was used to collect information about socio-demographic characteristics and dietary selenium intake. The blood pressure,blood lipid and other data were collected via physical examination. A multivariate logistic regression model was used to analyze the relationship between dietary selenium intake and hypertension .@*Results@#A total of 1 222 participants with complete dietary selenium intake data were included for analysis. The number（%）of participants with selenium intake higher than the level of estimated average requirement（EAR）,between the levels of EAR and recommanded nutrient intake （RNI）,between the levels of RNI and upper intake（UI）and higher than the level of UI were 729 （59.66%）,151（12.36%）,341（27.91%）and 1（0.01%）,respectively. There were 283 （30.53%）patients with hypertension out of 927 participants examined. The mean amount of selenium intake in patients with hypertention was（43.06±20.96）μg/d,which was significantly lower than（51.56±30.06） μg/d in non-hypertention participants（P<0.05）. After adjusting for age,body mass index,total cholesterol,triglyceride and diabetes mellitus in the multivariate logistic regression model,dietary selenium intake significantly reduced the risk of hypertension（OR=0.985,95%CI：0.978-0.993） .@*Conclusion@#About 60% of residents in Zhejiang Province had lower dietary selenium intake than estimated average requirement. Higher selenium intake was associated with lower risk of hypertension.
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Objective To explore the relationship between microelement intake and metabolic syndrome (MS) in elderly males and females in Zhejiang province. Methods Non-parametric Kruskal-Wallis tests were used to compare the intake of microelements by sex among different groups according to the diagnostic criteria of MS in 780 people(404 male,376 female).Logistic regression was used to explore the association between microelements and MS and its components.Results The percentages of inadequate intake of Mn,Zn and Se were relatively high among elderly people of Zhejiang province(males:30.45%,72.52%,75.74%;females:47.34%,33.78%,80.59%,respectively).Microelement intake in males were higher than females(P<0.05).The intake of Fe and Se were higher in the abdominal obesity group than the non-abdominal obesity group among elderly males,the intakes of Fe,Zn,Se in hypertension group were lower, and Se intake was higher in hyperglycemia and hypertriglyceridemia groups. Furthermore, enough intake of Fe(odds ratio OR,0.41;95% confidence interval CI:0.19,0.87)and Se(OR,0.30;95% CI:0.14, 0.63)decreased the risk of hypertension,and high Cu(OR,2.35;95% CI:1.18,4.71)intake increased the risk of hyperglycemia.Among females,Zn intake in the MS group was lower than in the non-MS group;the intakes of Cu, Zn and Se in the hypertension group were lower; the intakes of Fe, Mn and Zn in the hyperglycemia group were lower as well;and Se intake was lower in the low HDL-C group.Again,the high intake of Zn (OR, 3.21; 95% CI: 1.36, 7.59) and Se (OR, 2.79; 95% CI: 1.24, 6.27) increased the risk of abdominal obesity, but moderate intake of Cu (OR, 0.37; 95% CI: 0.19, 0.72) had a protective effect on hypertension. Conclusions The percentages of inadequate microelement intake were relatively high in elderly people of Zhejiang province. There is a relationship between dietary microelements and MS or its components. It is necessary to guide elderly people to adopt reasonable diet by referring to the Chinese dietary reference intake and Dietay Guidelines in order to improve the situation of microelements intake and promote health.
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Objective To understand the relationship between the dietary patterns and metabolic syndrome among elderly people in Zhejiang province,in order to provide scientific basis and reference for nutrition interventions.Methods Data were obtained from the 2010-2012 Chinese National Nutrition and Health Survey,and factor analysis was used to obtain food patterns among elderly people in Zhejiang province.The Logistic regression was used to explore the association of the food patterns with metabolic syndrome and its components.Results The intakes of bean products,nuts,fruits,eggs,and milk in elderly people were generally low,and the intakes of livestock and poultry meat,cooking oil and salt were relatively high.5 dietary patterns were derived by factor analysis:high-quality protein diet,mediterranean diet,condiments diet,traditional dietary pattern and western dietary pattern.The medical test results in 780 elderly people showed that the standardized prevalence of metabolic syndrome in the elderly was 28.8％,standardized central obesity rate was 41.2％,standardized hypertension rate was 50.3％ and standardized hyperglycemia rate was 39.5％.Logistic regression analysis showed that different dietary patterns had different effects on the metabolic syndrome and its components.Conclusions The prevalence rate of metabolic syndrome and the abnormal rates of its components are high in the elderly in Zhejiang.The intakes of fruits and milk are generally low,and intakes of livestock and poultry meat,cooking oil and salt are relatively high.The relationship between dietary patterns and MS or its components is complicated,so it is necessary to guide the elderly people to adopt reasonable diet by referring to the Diet Pagoda in order to reduce the risk of MS or its components.