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

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

来源：Nutrition, 2017, 41: 113-119.

DOI：10.1016/j.nut.2017.04.006

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

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.

• 出版日期2017-9