体重对心理健康的影响：使用遗传工具变量的新证据。
The effect of weight on mental health: New evidence using genetic IVs.
机构信息
Cornell University, Department of Economics, United States.
出版信息
J Health Econ. 2018 Jan;57:113-130. doi: 10.1016/j.jhealeco.2017.11.003. Epub 2017 Nov 23.
Abstract
Average body mass index (BMI) and depression prevalence grew over the last several decades, increasing medical expenditures. There is a strong correlation between obesity and depression but limited evidence on the causal effect of weight on mental health. I use an index of genetic risk for high BMI as a source of exogenous variation in weight to provide novel evidence on the effect of weight on mental health. This is one of the first studies to use genetics as an instrument for BMI and to examine the causal relationship between weight and depression. Results are mixed; I find a meaningful and significant effect of weight on suicidal ideation but no effects on counseling and an index of depression. The effect on suicidal ideation is concentrated in white females. From respondent and interviewer opinions of respondent attractiveness, social stigma is a mechanism through which weight affects mental health for white women.
摘要
过去几十年中，平均身体质量指数（BMI）和抑郁症患病率呈上升趋势，导致医疗支出增加。肥胖与抑郁症之间存在很强的相关性，但关于体重对心理健康的因果影响的证据有限。我利用 BMI 遗传风险指数作为体重的外生变化来源，为体重对心理健康的影响提供新的证据。这是首次利用遗传学作为 BMI 的工具并研究体重与抑郁症之间因果关系的研究之一。结果喜忧参半；我发现体重对自杀意念有显著影响，但对咨询和抑郁指数没有影响。这种影响主要集中在白人女性中。从受访者和访谈者对受访者吸引力的评价来看，社会耻辱感是体重影响白人女性心理健康的一种机制。
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