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Prospective cohort study
BMI, waist circumference and fat composition are not correlated with mortality risk in an older Korean population, but higher lean mass and lean mass index are predictors of reduced mortality risk
  1. Ian Janssen
  1. School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada
  1. Correspondence to Ian Janssen
    School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario K7L 3N6, Canada; ian.janssen{at}queensu.ca

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Context of the problem

Obesity is at epidemic proportions in all age groups, including the older people. For instance, in USA approximately 35% of older adults are obese as determined by the body mass index (BMI, weight in kg/height in m2).1 Obesity is a risk factor for several chronic diseases and premature mortality.2 However, the effect of high BMI on mortality is less pronounced in the older people.3

Overview of the article

The purpose of the study by Han and colleagues was to examine the effect of BMI, other obesity measures (body fat, waist circumference) and lean body mass on mortality risk. They examined 877 Koreans aged 65 and older. Participants were divided into three groups (<25th, 25–75th and >75th percentile) for each body composition measure and followed over …

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