TL;DRAbstract
Weight gain and obesity are becoming the most significant chronic public health conditions of our generation, impacting the well-being, productivity, longevity, and economics of our society. Obesity, along with diet and physical inactivity, is estimated to be responsible for approximately 400,000 preventable deaths per year and is expected to soon rival cigarette smoking as the most important public health concern 1. More than one-third of US adults—over 72 million people—were obese in 2005–2006 2, accounting for over 9% of total annual US medical expenditures 3. The etiology of obesity is multifactorial, brought about by an interaction between predisposing genetic and metabolic factors and a rapidly changing environment, one that favors excessive caloric intake while at the same time reducing opportunities to engage in a physically active lifestyle.
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Weight gain and obesity are becoming the most significant chronic public health conditions of our generation, impacting the well-being, productivity, longevity, and economics of our society. Obesity, along with diet and physical inactivity, is estimated to be responsible for approximately 400,000 preventable deaths per year and is expected to soon rival cigarette smoking as the most important public health concern 1. More than one-third of US adults—over 72 million people—were obese in 2005–2006 2, accounting for over 9% of total annual US medical expenditures 3. The etiology of obesity is multifactorial, brought about by an interaction between predisposing genetic and metabolic factors and a rapidly changing environment, one that favors excessive caloric intake while at the same time reducing opportunities to engage in a physically active lifestyle.
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