体重指数不可承受之轻

基尔——现在到了一年里许多人最怕踏上浴室称的时刻。不过尽管所有的节日盛宴可能导致了更粗的腰围,我们究竟该如何理解体重指数的高低意味着什么?

体重指数(BMI)一直在流行病学、医学和营养学领域有着广泛的应用。但其价值却越来越受到质疑,特别是在肥胖研究领域,身体成分测定正变得越来越重要。

体重指数的计算是用某人的体重(以公斤为单位)除以其身高(以米为单位)的平方(kg/m2)。该指数最初以比利时天文学家、数学家兼统计学家凯特勒的名字命名,1835年凯特勒证明了正常状况下成年人的体重随身高的平方成比例递增。卡特勒指数提供了不受身材影响的体重测量方法,让我们能够比较矮个者和高个者的体重。

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