Obesity is a costly international public health problem, due to the serious medical co-morbidities associated with it and the financial commitment required for its treatment. Obesity in the United States is increasing at an alarming rate. More than half of the US population is overweight, and of them, half are considered obese. The most common quantification of obesity is the body mass index (BMI), which is the measure of an individual’s weight in relation to height and is expressed as the person’s weight in kilograms divided by the square of the height in meters. The World Health Organization classifies obesity into three categories: Class I (BMI 30–35), Class II (BMI 35–40), and Class III (BMI>40).
From 1986 to 2000 the number of obese adults in the United States doubled, and the number of extremely obese quadrupled (Sturm, 2003). About a half to two-thirds of Americans are considered either overweight (BMI 25–30) or obese (BMI of 30 or higher). As of 2005, about 15 million...
KeywordsObstructive Sleep Apnea Bariatric Surgery Gastric Bypass Gastric Banding Laparoscopic Adjustable Gastric Band
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