HOW MUCH DO FOOD PRICES MATTER FOR MEN’S AND WOMEN’S BODY WEIGHT?

Sebastien Buttet, V. Dolar
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Abstract

This article contributes to the literature that studies the impact of food prices on food choices and obesity rates. While it is now well established that daily calories consumption in excess of dietary guidelines and the switch toward more sedentary lifestyles are key factors for the rise in obesity prevalence of American men and women after 1970, there is much less consensus about what caused eating habits of men and women to change over time. We analyze the impact of food prices on body weight in a dynamic setting where men and women have different preferences and choose between J food groups. We derive an analytical expression linking preference parameters, including the elasticity of substitution, to empirical estimates of price and cross-price elasticity of demand for the J food groups. One key takeaway from the calibration is that there is substantial preference heterogeneity between men and women. We find that most food groups are substitutes and thus an increase in food prices, perhaps due to a sin tax, does not always lead to body weight losses.
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食品价格对男性和女性的体重有多重要?
这篇文章为研究食品价格对食品选择和肥胖率的影响的文献做出了贡献。虽然现在已经确定,超过饮食指南的每日卡路里消耗和向久坐不动的生活方式的转变是1970年后美国男性和女性肥胖率上升的关键因素,但对于是什么导致男性和女性的饮食习惯随着时间的推移而改变,人们的共识要少得多。我们在一个动态环境中分析了食品价格对体重的影响,在这个环境中,男性和女性有不同的偏好,并在J类食品之间进行选择。我们推导了一个分析表达式,将偏好参数(包括替代弹性)与J食品组的价格和需求跨价格弹性的经验估计联系起来。校准得出的一个关键结论是,男性和女性之间存在显著的偏好异质性。我们发现,大多数食物都是替代品,因此食品价格的上涨,也许是由于罪恶税,并不总是会导致体重下降。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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