Pennsylvania State University, 211 Oswald Tower, University Park, PA 16802, USA.
Soc Sci Med. 2012 Jun;74(11):1754-64. doi: 10.1016/j.socscimed.2011.11.013. Epub 2011 Dec 20.
This paper investigates one explanation for the consistent observation of a strong, negative correlation in the United States between income and obesity among women, but not men. We argue that a key factor is the gendered expectation that mothers are responsible for feeding their children. When income is limited and households face food shortages, we predict that an enactment of these gendered norms places mothers at greater risk for obesity relative to child-free women and all men. We adopt an indirect approach to study these complex dynamics using data on men and women of childrearing age and who are household heads or partners in the 1999-2003 waves of the Panel Study of Income Dynamics (PSID). We find support for our prediction: Food insecure mothers are more likely than child-free men and women and food insecure fathers to be overweight or obese and to gain more weight over four years. The risks are greater for single mothers relative to mothers in married or cohabiting relationships. Supplemental models demonstrate that this pattern cannot be attributed to post-pregnancy biological changes that predispose mothers to weight gain or an evolutionary bias toward biological children. Further, results are unchanged with the inclusion of physical activity, smoking, drinking, receipt of food stamps, or Women, Infants and Children (WIC) nutritional program participation. Obesity, thus, offers a physical expression of the vulnerabilities that arise from the intersection of gendered childcare expectations and poverty.
本文探讨了一个解释,为什么在美国,女性的收入和肥胖之间存在着强烈的负相关关系,而男性则不存在。我们认为,一个关键因素是性别期望,即母亲有责任喂养孩子。当收入有限且家庭面临食物短缺时,我们预计这些性别规范的实施会使母亲相对于无子女的女性和所有男性更容易肥胖。我们采用间接方法,使用收入动态面板研究(PSID)1999-2003 年数据中处于生育年龄的男性和女性以及作为家庭户主或伴侣的数据,来研究这些复杂的动态关系。我们的预测得到了支持:与无子女的男性和女性以及食物不足的父亲相比,食物不足的母亲更容易超重或肥胖,并且在四年内体重增加更多。单身母亲的风险相对于已婚或同居的母亲更大。补充模型表明,这种模式不能归因于产后使母亲容易增重的生理变化或对亲生子女的进化偏见。此外,包括身体活动、吸烟、饮酒、接受食品券或妇女、婴儿和儿童(WIC)营养计划参与在内,结果并没有改变。因此,肥胖是由性别化的育儿期望和贫困的交叉产生的脆弱性的身体表现。