Cross-sectional study on the relationship between dietary selenium intake and hypertension

Objective To examine the association between selenium intake and hypertension in elderly population. Methods Participants from XiangYa hospital were randomly selected. The intake of selenium and other dairy consumption were evaluated by using a food frequency questionnaire, and the height, weight and blood pressure also measured. t-test and Chi-square test were used in univariate analysis, and Logistic regression model performed to analyze the relationship between the dietary selenium intake and hypertension. Results The results showed that there were significant differences(all P<0.05)between the hypertension and non-hypertension population groups in terms of sex, age, body mass index, diabetic and dietary fiber intake. After adjusting for age, gender, alcohol consumption, smoking status, etc, multiple Logistic regression model showed that there was a decrease trend in the risk of hypertension (OR =0.715,95% CI:0.528-0.968)between the level of selenium intake(>55.81 mg/d) and the risk of hypertension compared to the level of selenium intake(<27.51 mg/d).Conclusions These findings indicate that higher selenium intake might reduce the risk of hypertension.