美国疾病控制中心最近发布了一份报告，估算美国有40％的人肥胖（定义为身体质量指数BMI为30或更高 ） ， 其中包括20.6％的12~19岁青少年。
Recently, the US Centers for Disease Control estimated that a stunning 40% of all Americans are obese (defined as having a body mass index of 30 or higher), a figure that includes 20.6% of adolescents (12-19 years old).