Department of Psychology, Drexel University, Philadelphia, Pennsylvania 19102, USA.
Int J Eat Disord. 2011 May;44(4):295-303. doi: 10.1002/eat.20832.
Prospectively investigate whether weight gain or weight loss increases risk for onset of binge eating and purging in adolescent women.
Diagnostic interviews and direct measures of body mass were completed by 496 adolescent women annually for 8 years.
Substantial weight gain or weight loss during the study produced a sevenfold increase in risk for future onset of threshold or subthreshold bulimia nervosa (BN) relative to weight-stable participants, though the low incidence rate limited statistical power. Those who showed onset of threshold/subthreshold BN experienced greater increases in weight in the 2 years before onset of their eating disorder relative to healthy comparison participants.
This is the first prospective study to demonstrate that weight gain and weight loss may both increase risk for future onset of bulimic pathology. Results suggest that young women who have difficulty limiting their dietary intake are at increased risk for BN, an eating disorder characterized by loss of control over eating.
前瞻性研究体重增加或减轻是否会增加青少年女性出现暴食和催吐的风险。
通过每年对 496 名青春期女性进行诊断性访谈和直接的体重测量，共进行了 8 年。
与体重稳定的参与者相比，研究期间体重明显增加或减轻会使未来发生阈限或亚阈值神经性贪食症（BN）的风险增加七倍，尽管低发生率限制了统计能力。那些出现阈限/亚阈值 BN 的人在发病前的 2 年内体重增加幅度大于健康对照组的参与者。
这是第一项前瞻性研究，证明体重增加和减轻都可能增加未来出现贪食症病理的风险。结果表明，那些难以控制饮食摄入的年轻女性患 BN 的风险增加，BN 是一种以进食失控为特征的饮食障碍。
