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Nutritional Implications of Obesity: Before and After Bariatric Surgery

机译：肥胖的营养影响：减肥手术之前和之后

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Obesity is defined as the accumulation of excess body fat to the extent that it may have an adverse effect on health. Generally, the body mass index (BMI) is utilized to characterize further the degree of obesity, and it is calculated based on height and weight in kg/m2. According to the definition established by the World Health Organization, individuals are classed as overweight if their BMI is >25, whereas obese individuals are those with a BMI > 30. Based on the degree, obesity is further categorized into class I (BMI 30-34.9), class II (BMI 35-39.9), and class III (BMI >40). There is a linear correlation between incidence of chronic diseases and increased BMI. Obesity is now recognized as a worldwide epidemic, and its incidence is increasing exponentially. According to the World Health Organization's projections from 2005, approximately 1.7 billion people are considered overweight, and at least 400 million adults are obese. In the United States alone, nearly 33% of the population (97 million) are obese, and approximately 10 million people are morbidly obese (class III).
机译：肥胖被定义为体内多余脂肪的积累，可能对健康产生不利影响。通常，身体质量指数（BMI）用于进一步表征肥胖程度，并基于身高和体重（以kg / m2为单位）进行计算。根据世界卫生组织的定义，如果BMI> 25，则将其归类为超重;而BMI> 30，则将其归类为肥胖。根据程度，肥胖可进一步归为I类（BMI 30- 34.9），II级（BMI 35-39.9）和III级（BMI> 40）。慢性病的发病率与BMI升高之间存在线性关系。肥胖症现在被认为是一种全球流行病，其发病率呈指数增长。根据世界卫生组织2005年的预测，大约有17亿人被认为是超重的，至少4亿成年人是肥胖的。仅在美国，就有近33％的人口（9,700万）是肥胖者，而大约1000万人是病态肥胖（III类）。

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