Underweight Young Women Without Later Weight Gain Are at High Risk for Osteopenia After Midlife: The KOBE Study

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Author(s)

    • Tatsumi Yukako
    • Department of Preventive Medicine and Epidemiology Informatics, National Cerebral and Cardiovascular Center|Foundation for Biomedical Research and Innovation
    • Miyamatsu Naomi
    • Foundation for Biomedical Research and Innovation|Department of Clinical Nursing, Shiga University of Medical Science
    • Miyamoto Yoshihiro
    • Department of Preventive Medicine and Epidemiology Informatics, National Cerebral and Cardiovascular Center|Foundation for Biomedical Research and Innovation
    • Okamura Tomonori
    • Foundation for Biomedical Research and Innovation|Department of Preventive Medicine and Public Health, Keio University
    • Higashiyama Aya
    • Department of Preventive Medicine and Epidemiology Informatics, National Cerebral and Cardiovascular Center|Foundation for Biomedical Research and Innovation
    • Kubota Yoshimi
    • Foundation for Biomedical Research and Innovation|Department of Environmental and Preventive Medicine, Hyogo College of Medicine
    • Sugiyama Daisuke
    • Foundation for Biomedical Research and Innovation|Department of Preventive Medicine and Public Health, Keio University
    • Hirata Takumi
    • Foundation for Biomedical Research and Innovation|Center for Supercentenarian Medical Research, Keio University School of Medicine
    • Kadota Aya
    • Foundation for Biomedical Research and Innovation|Center for Epidemiologic Research in Asia, Shiga University of Medical Science
    • Nishimura Kunihiro
    • Department of Preventive Medicine and Epidemiology Informatics, National Cerebral and Cardiovascular Center|Foundation for Biomedical Research and Innovation
    • Imano Hironori
    • Foundation for Biomedical Research and Innovation|Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University

Abstract

<b>Background: </b>Although underweight young women are targets for interventions to prevent low bone mineral density (BMD), the relationship between change in body mass index (BMI) from youth to older age and BMD has not been widely investigated in community dwellers.<BR><b>Methods: </b>In 749 healthy Japanese women aged 40–74 years, BMD was measured by quantitative ultrasound and anthropometric measurements, and BMI was calculated from body weight and height. The BMI of participants at age 20 years was estimated by self-reported body weight and their present height. They were classified into four groups according to the presence of underweight (BMI <18.5 kg/m<sup>2</sup>) at 20 and/or at present. Logistic regression models were used to estimate multivariate-adjusted odds ratios (ORs) of the presence of underweight at 20 and/or at present for osteopenia (BMD T score <−1 standard deviations) compared with participants with BMI ≥18.5 kg/m<sup>2</sup> both at 20 and at present.<BR><b>Results: </b>The participants who were underweight both at 20 and at present had a higher OR for osteopenia compared with those with BMI ≥18.5 kg/m<sup>2</sup> at 20 and at present (OR 3.94; 95% confidence interval [CI], 1.97–7.89). Those underweight only at present also had significantly increased OR of developing osteopenia (OR 2.95; 95% CI, 1.67–5.24). The OR of those underweight only at 20 was 0.87 (95% CI, 0.51–1.48).<BR><b>Conclusions: </b>Current underweight was associated with increased risk for osteopenia among Japanese women, especially in those who were underweight both at 20 and at present. To prevent low BMD in the future, maintaining appropriate body weight might be effective for young underweight women.

Journal

  • Journal of Epidemiology

    Journal of Epidemiology 26(11), 572-578, 2016

    Japan Epidemiological Association

Codes

  • NII Article ID (NAID)
    130005278969
  • Text Lang
    ENG
  • ISSN
    0917-5040
  • Data Source
    J-STAGE 
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