Seven Mineral Intakes and Their Relations with Blood Pressure and Blood Lipids in Healthy Adults with Self‐Selected Diet

Abstract

The purpose of this study is to evaluate the dietary intake of Ca, P, Mg, Fe, Zn, Cu, and Mn and investigate their correlation with blood pressure and blood lipids. Targeting 258 healthy men and women, blood pressure was measured and blood samples were collected to analyze serum lipids, and then the intake of 7 minerals was assessed through a food intake survey for 3 days using a 24‐ hour recall method. The average age of the men and women was 49.6 and 49.2 respectively. The daily energy intake of the men was 1830.6 kcal which was significantly higher than that of women, 1476.2 kcal (p<0.001). The mineral intake of the subjects was as follows: 451.0 mg/d for Ca, 915.2 mg/d for P, 279.2 mg/d for Mg, 12.6 mg/d for Fe, 8.3 mg/d for Zn, 1.2 mg/d for Cu, and 4.2 mg/d for Mn. These accounted for 63.8%, 130.8%, 90.7%, 129.8%, 97.5%, 154.5%, and 113.5% of adequate intake or the recommended intake of each mineral, respectively. Subjects who did not satisfy the estimated average requirement were 74.0% for Ca, 63.2% for Mg, and 41.9% for Zn. After adjusting for age, sex, BMI and energy intake, Mg intake had a negative correlation with SBP, and Cu intake had a significant negative correlation with SBP and DBP. Also, Mn intake was negatively correlated with DBP, serum total cholesterol and triglycerides. Thus, it is concluded that the dietary intake of Mg, Cu and Mn may play an important role in controlling blood pressure and lipids.