Association between 24-h urinary sodium excretion and obesity in Korean adults: A multicenter study

Ga Eun Nam, Seon Mee Kim, Mi Kyeong Choi, Young Ran Heo, Tai Sun Hyun, Eun Soon Lyu, Se Young Oh, Hae Ryun Park, Hee Kyong Ro, Kyungdo Han, Yeon Kyung Lee

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Objective The aim of this study was to explore the association between sodium intake, as assessed by 24-h urinary sodium excretion, and various obesity parameters among South Korean adults. The associations of 24-h urinary sodium excretion and sodium intake calculated from the dietary questionnaire with obesity parameters also were compared. Methods This multicenter, cross-sectional study analyzed data of 640 healthy adults from eight provinces in South Korea. Obesity was assessed by body mass index (BMI), waist circumference (WC), waist-to-hip ratio (WHR), and waist-to-height ratio (WHtR). Mean 24-h urinary sodium excretion was calculated from repeatedly collected 24-h urine samples. Participants’ dietary intake was assessed by 24-h dietary recall interview on the days before 24-h urine collection. Results In both sexes, the means of all anthropometric measurements tended to increase proportionally with 24-h urinary sodium excretion quartiles, regardless of adjustment. Men in the highest quartile (Q4) of 24-h urinary sodium excretion had increased odds of obesity (as assessed by BMI, WC, WHR, and WHtR) compared with men in the three lower quartiles (Q1–Q3) of 24-h urinary sodium excretion. Women in Q4 of 24-h urinary sodium excretion exhibited a higher chance of general obesity and abdominal obesity. Sodium intake calculated from the dietary questionnaire was not significantly associated with obesity in either sex. Conclusions In Korean adults, there was a positive association between higher sodium intake as assessed by 24-h urinary sodium excretion and obesity independent of energy intake.

Original languageEnglish
Pages (from-to)113-119
Number of pages7
JournalNutrition
Volume41
DOIs
Publication statusPublished - 2017 Sep 1

Keywords

  • 24-hour urinary sodium excretion
  • Obesity
  • Public health
  • Sodium intake

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics

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