Obesity 6 pp - Obesity Defined Obesity BMI = wt in kg/ht in...

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1 Obesity 2011 Obesity Defined • BMI = wt in kg/ht in m 2 • Adults: – Overweight: BMI 25 to 29.9 – Obese: BMI > 30 • Tim Tebow: 6’3, 240 lbs – BMI = 30.2 Prevalence of High Body Mass Index for Age in Boys and Girls Aged 2 Through 5 Years, 1999- 2008 Copyright restrictions may apply. Ogden, C. L. et al. JAMA 2010;303:242-249. Prevalence of High BMI for Age in Boys and Girls Aged 6 Through 19 Years, 1999-2008 Copyright restrictions may apply. Ogden, C. L. et al. JAMA 2010;303:242-249. Why this dramatic increase in obesity over the last 30 years??? Contributing Factor #1: Behavior • Energy imbalance • Excessive caloric intake • Portion distortion ht p:/ www.cdc.gov/nccdphp/dnpa/obesity/contributing_factors.htm Calories In Calories Out
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2 Contributing Factor #2: Environment • Certain environments may not promote physical activity • Too much sedentary time • No physical education classes X Contributing Factor #3: Genetics • Obesity does have strong genetic determinants But population genetics has • But population genetics has not changed dramatically in the last few decades. Obesity-Associated Diseases Diseases related to obesity can be classified into one of classified into one of two pathophysiological categories First Category Disabilities that arise from the arise from the actual increases in the fat mass (e.g. osteoarthritis, sleep apnea)
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3 Second Category Diseases that result from the metabolic changes associated with excess fat Diseases Related to Metabolic Changes that Fat Cells Cause • Type 2 diabetes • Gallbladder disease • Cardiovascular disease • Cancer • Nonalcoholic fatty liver disease Obesity and Insulin Resistance • Overweight individuals with normal glucose
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Obesity 6 pp - Obesity Defined Obesity BMI = wt in kg/ht in...

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