Does Participation in the Food Stamp Program Increase the Prevalence of Obesity and Health Care Spending?
利用面板数据估计食品券计划参与对非老年成年人肥胖概率和医疗支出的影响，发现女性参与导致肥胖概率增加5.9%，且直接收入效应带来的医疗支出增加大于体重变化带来的间接效应。
Abstract We use panel data techniques and information on state‐level Food Stamp Program characteristics to obtain unbiased estimates of the impact of Food Stamp Program participation on weight status and health care spending among nonelderly adults. Our results suggest that program participation by women leads to a 5.9% (p = 0.07) increase in their likelihood of overweight and obesity, which is smaller than previous estimates, and to higher medical expenditures. The direct effect of program participation on medical spending through higher discretionary income is significantly larger than the indirect effect through changes in weight status.