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Metabolic risk factors in Korean adolescents with severe obesity: Results from the Korea National Health and Nutrition Examination Surveys (K-NHANES) 2007–2014

  • Won Kyoung Cho
    Affiliations
    Department of Pediatrics, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Republic of Korea
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  • Kyungdo Han
    Affiliations
    Department of Biostatistics, College of Medicine, The Catholic University of Korea, Republic of Korea
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  • Moon Bae Ahn
    Affiliations
    Department of Pediatrics, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Republic of Korea
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  • Yong-Moon Park
    Affiliations
    Epidemiology Branch, National Institute of Environmental, Health Sciences, National Institutes of Health, 111 T.W. Alexander Dr., Research Triangle Park, NC 27709, USA
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  • Min Ho Jung
    Correspondence
    Corresponding authors at: Department of Pediatrics, College of Medicine, Yeouido St. Mary’s Hospital, The Catholic University of Korea, 10, 63-ro, Yeongdeungpo-gu, Seoul 07345, Republic of Korea (M.H. Jung). Department of Biostatistics, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea (Y.-G. Park).
    Affiliations
    Department of Pediatrics, College of Medicine, Yeouido St. Mary’s Hospital, The Catholic University of Korea, Republic of Korea
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  • Byung-Kyu Suh
    Affiliations
    Department of Pediatrics, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Republic of Korea
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  • Yong-Gyu Park
    Correspondence
    Corresponding authors at: Department of Pediatrics, College of Medicine, Yeouido St. Mary’s Hospital, The Catholic University of Korea, 10, 63-ro, Yeongdeungpo-gu, Seoul 07345, Republic of Korea (M.H. Jung). Department of Biostatistics, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea (Y.-G. Park).
    Affiliations
    Department of Biostatistics, College of Medicine, The Catholic University of Korea, Republic of Korea
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Published:February 07, 2018DOI:https://doi.org/10.1016/j.diabres.2018.01.030

      Highlights

      • Severe obesity in adolescents has become an important global public health issue.
      • The prevalence of severe and extreme severe obesity in Korean adolescents was 5.9% and 0.9%.
      • Adolescents with severe obesity have more metabolic risk factors compared to adolescents with less severe degree of obesity.

      Abstract

      Aims

      To investigate the metabolic risk factors according to the degree of obesity in Korean adolescents.

      Methods

      Among 7197 subjects aged 10–18 years who participated in the 2007–2014 K-NHANES, 1326 adolescents (M = 744, F = 582) with age and sex specific body mass index (BMI) ≥85th percentile were included. These adolescents with obesity were classified as: overweight, obesity, severe obesity, and extreme severe obesity. For assessing central obesity, the subjects were further-classified as: normal waist obese, abdominal obesity I, abdominal obesity II and abdominal obesity III.

      Results

      The prevalence of overweight, obesity, severe obesity and extreme severe obesity were 5.6%, 6.2%, 5.9% and 0.9% in Korean adolescents. With increasing levels of obese category, the incidence of metabolic risk factors such as HDL-C < 40 mg/dL or <50 mg/dL in girls older than 16 years-old (20.2%, 18.5%, 34.4%, 43.6%, P < .0001), TG ≥ 150 mg/dL (15.3%, 16.7%, 26.5%, 30.9%, P < .003), HbA1C ≥ 5.8% (12.8%, 13.5%, 21.9%, 42.2%, P < .006), SBP ≥ 130 mg/dL (3.5%, 6.4%, 8.1%, 19.5%, P < .003) significantly increased. With increasing levels of central obese category, the incidence of metabolic risk factors such as HDL-C < 40 mg/dL or <50 mg/dL in girls older than 16 years-old (20.2%, 26.2%, 37.9%, 35.7%, P < .0007), TG ≥ 150 mg/dL (16.1%, 21.2%, 25.8%, 29.8%, P < .004), glucose ≥ 100 mg/dL (7.7%, 7.3%, 11.7%, 17.4%, P < .009) and SBP ≥ 130 mg/dL (5.1%, 7.1%, 3.0%, 13.9%, P < .002) significantly increased.

      Conclusion

      Adolescents with severe obesity have more metabolic risk factors compared to adolescents with less severe degree of obesity.

      Keywords

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