title: Daily Intake of Magnesium and its Relation to Urinary Excretion in Korean Healthy Adults Consuming Self-Selected Diets.
abstract: Magnesium (Mg) is an essential nutrient as a structural constituent of bone and regulator of >300 enzymes. However, studies on intake and urinary excretion of Mg are limited. The purpose of this study was to evaluate Mg intake and its relation to 24-h urinary excretion in healthy adults. Anthropometric measurements and dietary intake by the 24-h recall method were conducted in 80 adults aged 21-69 (average 44.3) years. Urine was collected for 24 h on the day following the dietary survey. Dietary assessment and 24-h urine collection were repeated 3 days later. Daily intake and urinary excretion of Mg were analyzed using Can-Pro and ICP-OES, respectively. The statistical analysis was conducted using SAS program. Mg intake of the subjects was 319 ± 129 mg/day for men and 277 ± 94 mg/day for women and the proportion of subjects who did not meet the estimated average requirement was 50 and 67.5 % for men and women, respectively. Urinary Mg excretion was 30.3 % of the daily Mg intake. Urinary Mg excretion was not significantly correlated with the daily Mg intake. Korean adults are not meeting the recommended intake of Mg, but its urinary excretion suggests homeostasis is not compromised.
authors.affiliation: Division of Food Science, Kongju National University, Yesan, 32439, South Korea. mkchoi67@kongju.ac.kr.
authors.forename: Mi-Kyeong
authors.initials: MK
authors.lastname: Choi
authors.affiliation: Department of Nutrition Science, Purdue University, 700 W State Street, West Lafayette, IN, 47906, USA.
authors.forename: Connie M
authors.initials: CM
authors.lastname: Weaver
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D044466:Asian People; D015992:Body Mass Index; D004032:Diet / Q000208:ethnology*; D004034:Diet Surveys / Q000379:methods* / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008274:Magnesium / Q000008:administration & dosage* / Q000652:urine*; D008297:Male; D008875:Middle Aged; D015596:Nutrition Assessment; D064167:Recommended Dietary Allowances; D056910:Republic of Korea; D055815:Young Adult
chemical_list: D008274:Magnesium
keywords: Adult; Daily intake; Magnesium; Self-selected diet; Urinary excretion