体重指数是一个比一个人的体重(以公斤除以身高米数平方。这是一个估计的肥胖或者脂肪组织的一个人。一个健康的体重指数被定义为20 - 24.9;超重是25到29.9;肥胖是30至39.9,病态肥胖超过40。BMI是相对准确的,但是,它可以在肌肉个体高估肥胖。
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