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Obesity: Surgical and Pharmaceutical Options & Navigating Diet Trends

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Obesity: Surgical and Pharmaceutical Options & Navigating Diet Trends Obesity: Surgical and Pharmaceutical options & Navigating diet trends Guillermo Higa MD, FACS, FASMBS Bariatric Surgery Medical Director Chief of Division of Bariatric Surgery St. Mary’s Hospital Tucson-Arizona What is Obesity? The Obesity Medicine Association Definition of Obesity • “Obesity is defined as a chronic, relapsing, multi-factorial, neurobehavioral disease, wherein an increase in body fat promotes adipose tissue dysfunction and abnormal fat mass physical forces, resulting in adverse metabolic, biomechanical, and psychosocial health consequences.” Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Obesity is common, serious, and costly • The prevalence of obesity was 39.8% and affected about 93.3 million of US adults in 2015-2016. • Obesity-related conditions include heart disease, stroke, type 2 diabetes and certain types of cancer that are some of the leading causes of preventable, premature death. • The estimated annual medical cost of obesity in the United States was $147 billion in 2008 US dollars; the medical cost for people who have obesity was $1,429 higher than those of normal weight. https://www.cdc.gov/obesity/data/adult.html Obesity Kills • Leading cause of preventable death • Recently surpassed smoking as leading cause • Lifespan shortened 9 - 12 years • Over 400,000 deaths per year • 46 deaths each hour Prevalence of Self-Reported Obesity Among U.S. Adults by State and Territory, BRFSS, 2017 ¶ Prevalence estimates reflect BRFSS methodological changes started in 2011. These estimates should not be compared to prevalence estimates before 2011. *Sample size <50 or the relative standard error (dividing the standard error by the prevalence) ≥ 30%. Obesity Prevalence • In 2015 – 2016, the prevalence of obesity is estimated to be ~ 40% in US adults, and 18.5% of youths • The prevalence of obesity is higher among non-Hispanic black and Hispanic adults than among non-Hispanic white and non-Hispanic Asian adults and youth • At least since 1999, the trend towards an increase in prevalence in obesity continues to increase among adults and youths Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [2] Obesity as a Multifactorial Disease Genetics/ Epigenetics Neurobehavioral Environment (Social/Culture) Medical Immune Endocrine Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Obesity: Epigenetic Etiology/Causes Epigenetics: Alterations in gene expression without alteration in the genetic code Pre-pregnancy • Pre-conception paternal or maternal overweight/obesity may influence epigenetic signaling during subsequent pregnancy: ‒ Increased risk of overweight/obesity in offspring ‒ Increased risk of other diseases (e.g., cardiovascular disease, cancer, diabetes mellitus, etc.) in offspring Pregnancy • Especially in the presence of gestational diabetes mellitus, unhealthy maternal nutrition in women who are pregnant and overweight or with obesity may increase placental nutrient transfer to fetal circulation: ‒ Glucose ‒ Lipids and fatty acids ‒ Amino acids • Increased maternal nutrient transport may alter fetal gene expression: ‒ Covalent modifications of deoxynucleic acid and chromatin ‒ May impact stem cell fate ‒ May alter postnatal biologic processes involved in substrate metabolism ‒ May increase offspring predisposition to overweight/obesity and other diseases Post-pregnancy • Adverse effects of epigenetic pathologies may help account for generational obesity • Improvement in generational obesity in offspring will likely require generational change in nutrition and physical activity in prior generations of parents Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [7] [11] [12] Obesity: Extragenetic Etiology/Causes Extragenetic • Environment (family, home, geographic location) • Culture • Lack of optimal nutrition and physical activity • Disrupted sleep (e.g., poor quality, too little, or too much) • Adverse consequences of medications • Mental stress • Neurologic dysfunction (central nervous system trauma, hypothalamic inflammation, leptin resistance) • Viral infections • Gut microbiota neurologic signaling and transmission of pro-inflammatory state Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [7] Obesity is common, serious, and costly • The prevalence of obesity was 39.8% and affected about 93.3 million of US adults in 2015-2016. • Obesity-related conditions include heart disease, stroke, type 2 diabetes and certain types of cancer that are some of the leading causes of preventable, premature death. • The estimated annual medical cost of obesity in the United States was $147 billion in 2008 US dollars; the medical cost for people who have obesity was $1,429 higher than those of normal weight. https://www.cdc.gov/obesity/data/adult.html Obesity Algorithm Obesity as a Disease Data Collection Evaluation and Assessment Management Decisions Motivational Interviewing Nutritional Behavior Pharmaco- Bariatric Physical Activity Intervention Therapy therapy Procedures Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [1] Which Is the “Best” Measure of Obesity? Population Assessment • Body mass index (BMI), waist circumference (WC), and percent body fat (%BF) similarly correlate with prevalence of metabolic syndrome Individual Assessment • BMI is a reasonable initial screening measurement for most patients • WC provides additional information regarding adipose tissue function/dysfunction and predisposition to metabolic disease among individuals with BMI<35 kg/m2 • %BF may be more useful in patients with extremes in muscle mass (i.e., individuals with sarcopenia or substantial increases in muscle mass), and thus may be a more accurate measure of body composition when assessing the efficacy of interventions directed towards change in muscle mass Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [1] BMI = weight (kg)/height (m²) = [weight (lbs)/height (in²)] x 703 Acceptable Weight 18 – 25 Overweight 25 – 30 Obese 30 – 35 Severe Obesity 35 – 40 Morbid Obesity 40 – 50 Super Morbid Obesity above 50 Waist Circumference: Increased Body Fat (Adiposity) Obesity classification: Waist circumference (WC)* Abdominal Obesity - Men Abdominal Obesity - Women > 40 inches > 35 inches > 102 centimeters > 88 centimeters *Different WC abdominal obesity cut-off points are appropriate for different races (i.e., > 90 centimeters for Asian men and > 80 centimeters for Asian women) Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [23] [24] [25] [26] Waist Circumference Advantages • Well-correlated to metabolic disease • Direct anatomical measure of adipose tissue deposition, with an increase in waist circumference reflective of adipose tissue dysfunction • Low cost Disadvantages • Measurement not always reproducible • Waist circumference is not superior to BMI in correlating to metabolic disease in patients with BMI > 35 kg/m2 • Racial/ethnic differences Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [24] [25] [26] Overall Management Goals Adult patient with overweight or obesity Improve patient Improve quality Improve body weight health of life and composition Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Obesity Algorithm Obesity as a Disease Data Collection Evaluation and Assessment Management Decisions Motivational Interviewing Nutritional Behavior Pharmaco- Bariatric Physical Activity Intervention Therapy therapy Procedures Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [1] Motivational Interviewing Techniques: 5A’s of Obesity Management • Ask for permission to discuss body weight. Ask • Explore readiness for change. • Assess BMI, waist circumference, and obesity stage. Assess • Explore drivers and complications of excess weight. • Advise the patient about the health risks of obesity, the benefits of modest weight loss (i.e., 5-10 percent), the need for long-term strategy, and Advise treatment options. • Agree on realistic weight-loss expectations, targets, behavioral changes, Agree and specific details of the treatment plan. • Assist in identifying and addressing barriers; provide resources; assist in finding and consulting with appropriate providers; arrange regular follow Arrange/Assist up. Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [226] [227] Motivational Interviewing: Stages of Change Pre-contemplation Progress Unawareness of the problem Contemplation Thinking of change in the next 6 months Preparation Making plans to change now Action Implementation of change Relapse Restart of unfavorable behavior Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [204] [205] Treatment of Adult Patients with Overweight or Obesity Medical Management and Coordination Nutrition Physical Activity Behavior Therapy Pharmacotherapy Bariatric Surgery Obesity Algorithm®. ©2017-2018 Obesity Medicine Association. Reference/s: [1] Nutritional Therapy for Obesity Nutrition History Meals and Snacks Behavior Records • Timing • Previous nutritional attempts to • Food and beverage diary, • Frequency (via questionnaire) lose weight and/or change body including type of food or • Nutritional content composition beverage consumed and amount • Preparer of food ‒ If unsuccessful or un- consumed • Access to foods sustained, what were ‒ 72-hour recall • Location of home food short- and long-term ‒ Keep food and beverage consumption (i.e., eating area, barriers to achieving or record
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