HSCI 130 Lecture 19: Eating Disorders and Obesity

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Self reports of height and weight yield lower measures of obesity. Underreporting of weight increase with increasing bmi (men say height is higher, women say weight is under) Self-reported data collected face to face v. s telephone interviews yield higher prevalence of overweight/obesity methods of collections have changed across the years. Waist circumference: 94cm men and 80cm women. Bmi calculations (imperial) = weight (pounds)/height (inches)^2 x 703. Raters are slightly lower for women than men at all ages except for those aged 72 years or older. While higher-income women have lower obesity rates than lower-income women, this association is not seen among men (figure 4) in the latest canadian data. Energy-density: available dietary energy per unit weight (kilocalorie per gram or megajoule per kilogram) Energy cost: monetary cost of a unit of energy (dollars per kilocalorie or dollars per megajoule) Dietary energy density and energy costs are inversely related, so that more energy dense diets cost less.

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