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Daily Intake of Magnesium and its Relation to Urinary Excretion in Korean Healthy Adults Consuming Self-Selected Diets

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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.

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Acknowledgments

This work was supported by the research grant of the Kongju National University in 2016.

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Authors and Affiliations

  1. Division of Food Science, Kongju National University, Yesan, 32439, South Korea

    Mi-Kyeong Choi

  2. Department of Nutrition Science, Purdue University, 700 W State Street, West Lafayette, IN, 47906, USA

    Connie M. Weaver

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  1. Mi-Kyeong Choi
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  2. Connie M. Weaver
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Correspondence to Mi-Kyeong Choi.

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This study was approved by the Institutional Review Board of Kyungbuk National University (IRB 2014–0053) and it was conducted upon reception of consent from study participants.

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Choi, MK., Weaver, C.M. Daily Intake of Magnesium and its Relation to Urinary Excretion in Korean Healthy Adults Consuming Self-Selected Diets. Biol Trace Elem Res 176, 105–113 (2017). https://doi.org/10.1007/s12011-016-0822-0

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