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Epidemiology of Obesity

Epidemiology of Obesity. Nancy E. Sherwood, Ph.D. Division of Epidemiology, University of Minnesota. Obesity …. 2 nd leading cause of preventable death Contributes to hypertension, type 2 diabetes, stroke, sleep apnea, and cancers Factor of social bias and discrimination. Definitions.

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Epidemiology of Obesity

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  1. Epidemiology of Obesity Nancy E. Sherwood, Ph.D. Division of Epidemiology, University of Minnesota

  2. Obesity … • 2nd leading cause of preventable death • Contributes to hypertension, type 2 diabetes, stroke, sleep apnea, and cancers • Factor of social bias and discrimination

  3. Definitions • Obesity: excess adipose tissue • Overweight: excess weight for height

  4. Measuring Childhood Obesity • Difficult due to great physical changes occurring during childhood and adolescence • Potential classifications: • Weight-for-height percentiles • Percent of ideal body weight • Skinfold measures • Body Mass Index [BMI]

  5. Cautions of the BMI for youth • Lack of risk criteria on which to base youth measures • Single cutoff for youth is inappropriate

  6. Childhood Obesity Trends • Prevalence of overweight youth

  7. Childhood Obesity Trends (cont.) • Males (15%) slightly more likely to be overweight compared to females (14%) Ages 6-11

  8. Persistence of Childhood Obesity • 15% of overweight infants… • 25% of overweight preschool children… • 80% of obese 10-14 year-old youth with at least 1 obese parent… …become overweight adults

  9. Etiology of Childhood Obesity • Environment • Sedentary Lifestyle • Access to Food • Genetics • Low Metabolism • Poor Appetite Control • Low Fat Free Mass • Low Levels of • Lipid Oxidation • Rate

  10. Intervention Approaches • Promote dietary changes • Promote increase in activity • Start early – focus on school-aged children

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