Clinical Nutrition in Gastrointestinal Disease

Alan Buchman, MD, MSPH

Chapter 49: Surgical Management Of Obesity (continued)

Alexander P. Nagle, MD; Jay B. Prystowsky, MD; Brintha Enestvedt, MD; John E. Pandolfino, MD

Obesity may be defined as an abnormal state of health in which there is an excess of body fat. Morbid obesity is the most serious form of obesity and generally correlates with a body weight that is more than 70% above ideal body or a body mass index (BMI) greater than 40 kg/m2. BMI represents the relationship between height and weight and is calculated as weight (kg) divided by height squared (m2). Based on US 1999-2000 population data, 64.5% of US adults are overweight (BMI >25), 30.5% are obese (BMI >30), and 4.7% are morbidly obese (BMI >40).1 The prevalence of…