Korean Journal of Community Nutrition (대한지역사회영양학회지)

The Korean Society of Community Nutrition (대한지역사회영양학회)
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Associations between 24-hour Urine Sodium Excretion Level and Obesity-related Metabolic Risk Factors

비만인과 정상인에서 24시간 소변 내 나트륨 배출량과 비만관련 대사위험지표의 관련성

  • Oh, Hyun Woo (Department of Internal Medicine, Hanyang University College of Medicine) ;
  • Kim, Hyun Jung (Department of Food and Nutrition, Sungshin Women's University) ;
  • Jun, Dae Won (Department of Internal Medicine, Hanyang University College of Medicine) ;
  • Lee, Seung Min (Department of Food and Nutrition, Sungshin Women's University)
  • 오현우 (한양대학교 의과대학 내과학교실) ;
  • 김현정 (성신여자대학교 식품영양학과) ;
  • 전대원 (한양대학교 의과대학 내과학교실) ;
  • 이승민 (성신여자대학교 식품영양학과)
  • Received : 2015.10.12
  • Accepted : 2015.12.24
  • Published : 2015.12.30
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Abstract

Objectives: Excess sodium intake has been linked to obesity and obesity-related indices. However, the scientific evidence for this association is inadequate. The purpose of this study was to investigate the association between urinary sodium excretion and obesity-related indices among Korean adults. Methods: A convenience sample of 120 subjects (60 obese and 60 non-obese subjects) were recruited applying frequency matching for sex and age between two groups. Sodium intake level was assessed through 24-hour urine collection. Obesity-related metabolic risk factors, including fasting blood lipid indices, subcutaneous and visceral fat through computed tomography (CT), insulin resistance indices, blood pressure and liver enzymes were measured in all subjects. These obesity-related metabolic risk factors were compared between obese and non-obese group according to sodium excretion levels (<110 mEq/day, 110~180 mEq/day, >180 mEq/day). Results: After adjusting for age, gender, health behaviors (smoking, exercise, drinking), and energy intake, several obesity-related metabolic risk factors, including abdominal circumference, body fat percentage, subcutaneous and visceral fat, triglyceride, and systolic blood pressure were found to be significantly deteriorated as the sodium excretion level increases. In addition, multivariate adjusted-odds ratios of abdominal obesity, high blood triglyceride, and high blood pressure were found significantly higher in the highest sodium excretion group compared to the lowest group. The mean number of metabolic syndrome risk factors was also significantly greater in the highest sodium excretion group than in the lowest group. Conclusions: The current study findings suggested that high sodium intake can affect obesity and metabolic syndrome risk negatively, implying the necessity of future research on low-sodium diet intervention in relation to obesity and related health problems.

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References

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