女性的2至4指比例（2D:4D）与饮食失调诊断
The 2 to 4 digit ratio (2D:4D) and eating disorder diagnosis in women.
作者信息
Quinton Stephanie Jane, Smith April Rose, Joiner Thomas
机构信息
School of Psychology, Charles Stuart University, Bathurst, NSW 2795, Australia, .
出版信息
Pers Individ Dif. 2011 Sep;51(4):402-405. doi: 10.1016/j.paid.2010.07.024.
Abstract
Eating disorders are more common in females than in males and are believed to be caused, in part, by biological and hormonal factors. Digit ratio or 2D:4D (the ratio of the 2(nd) to the 4(th) digit) is considered to be a proxy for prenatal testosterone (PT) and prenatal oestrogen (PE) exposure. However, how 2D:4D may be related to type of eating pathology is unknown. The relationship between 2D:4D and eating disorder diagnosis was investigated in recovered and currently eating disordered (n=31) and control (n=99) women. Mean 2D:4D ratio was significantly lower (indicating higher levels of PT and lower levels of PE) in anorexic (AN) compared to bulimic (BN) women, with controls intermediary. In eating disordered women, 2D:4D was positively and significantly related to current weight, lowest weight and current BMI, with strongest associations for right 2D:4D. Among women, low 2D:4D is related to AN and high 2D:4D to BN, suggesting a differential causal influence of prenatal sex hormones on later eating pathology.
摘要
饮食失调在女性中比男性更常见，并且据信部分是由生物学和激素因素引起的。指长比或2D:4D（第二指与第四指的比例）被认为是产前睾酮（PT）和产前雌激素（PE）暴露的一个指标。然而，2D:4D与饮食病理学类型之间的关系尚不清楚。对康复的和目前患有饮食失调症的女性（n = 31）以及对照女性（n = 99）进行了2D:4D与饮食失调诊断之间关系的调查。与贪食症（BN）女性相比，厌食症（AN）女性的平均2D:4D比例显著更低（表明PT水平更高而PE水平更低），对照组则处于中间水平。在患有饮食失调症的女性中，2D:4D与当前体重、最低体重和当前体重指数呈正相关且显著相关，其中右2D:4D的关联最强。在女性中，低2D:4D与AN相关，高2D:4D与BN相关，这表明产前性激素对后期饮食病理学有不同的因果影响。
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