Association between Dietary Sodium Intake and Abdominal Obesity in Pre-diabetes Korean Adults

전당뇨병 성인에서 나트륨 섭취와 복부비만과의 상관관계

  • Lim, So Young (Dept. of Food and Nutrition and Human Ecology Research Institute, Chonnam National University) ;
  • Yang, Soo Jin (Dept. of Food and Nutrition and Human Ecology Research Institute, Chonnam National University)
  • 임소영 (전남대학교 식품영양학과/생활과학연구소) ;
  • 양수진 (전남대학교 식품영양학과/생활과학연구소)
  • Received : 2014.01.16
  • Accepted : 2014.03.06
  • Published : 2014.05.31


The objective of this study was to assess the relationship between dietary sodium intake and prevalence of abdominal obesity in Korean adults. We used data from the Korea National Health and Nutrition Examination Survey V-1 and analyzed data on 4,475 Koreans (${\geq}30$ years old). Subjects were divided into three groups according to fasting plasma glucose (FPG): 1) normal (FPG <100 mg/dL), 2) pre-diabetes ($100mg/dL{\leq}FPG{\leq}125mg/dL$), and 3) diabetes (FPG ${\geq}126mg/dL$ or subjects diagnosed with diabetes). The subjects in each category were stratified by dietary sodium intake as well as index of abdominal obesity. We found that dietary sodium intake was positively correlated with waist circumference (WC) (P=0.002) and was particularly high in the pre-diabetes group. In multiple logistic regression analysis, the normal and diabetes groups showed no association between dietary sodium intake and WC, whereas the pre-diabetes group with a high sodium intake exhibited a significant association (odds ratio (OR)=1.479, P=0.029) between dietary sodium intake and WC. Further, the OR for abdominal obesity in the high sodium intake group with pre-diabetes was 1.590 after adjusting for age and sex (P=0.012). In addition, the ORs for the prevalence of abdominal obesity with fasting glucose, fasting insulin, and homeostasis model assessment of insulin resistance were significantly higher in the pre-diabetes group with high sodium intake compared with low sodium intake. Moreover, these associations were significant even after adjusting for confounding variables (model 2: age and sex; model 3: age, sex, and total energy intake). Our results suggest a strong association between sodium intake and abdominal obesity in pre-diabetes Korean adults.


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