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Buy as you need: Nutrition and food storage imperfections

机译：购买按需购买：营养和食品储存瑕疵

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摘要

In this paper, we investigate whether and how a more steady supply of foodgrain in local markets impacts the nutritional status (measured with body-mass-indexes) of both children and adults, in a context characterized by large seasonal fluctuations in the price and availability of foodgrain. Taking advantage of the random scaling-up of a program of Food Security Granaries in Burkina Faso, we reach three conclusions. First, especially in remote areas where local markets are thin, the program considerably dampens nutritional stress. The effect is strongest among children, and young children in particular, for whom deficient nutrition has devastating long-term consequences. Second we argue that it is a change in the timing of food purchases, translated into a change in the timing of consumption, that drives the nutritional improvement. A simple two-period model shows that, once we account for various forms of storage costs, an increase in nutrition does not necessarily require larger quantity of food purchases or even consumption. Our last and unexpected conclusion is that the losses associated with foodgrain storage do not stem from physical losses in household granaries but rather from inefficient seasonal bodymass fluctuations. One plausible mechanism behind this particular storage imperfection rests on the households' urge to consume readily available foodgrain.
机译：在本文中，我们调查了当地市场中的美食供应更稳定，如何影响儿童和成人的营养状况（用体重指数），在价格和可用性的大规模季节性波动美食。利用Burkina Faso的食品安全粮仓程序的随机扩大，我们得出了三个结论。首先，特别是在当地市场薄的偏远地区，该程序显着抑制了营养应激。儿童的效果最强，特别是幼儿，缺乏营养造成的长期后果。其次，我们认为这是食品购买时机的变化，转化为消费时间的变化，推动营养改善。一个简单的两期模型表明，一旦我们考虑了各种形式的储存成本，营养的增加不一定需要更大的食物购买或甚至消费。我们的最后一个和意外的结论是，与食品储存相关的损失不会源于家庭粮食中的物理损失，而是从低效的季节性体验波动。这种特殊储存缺陷背后的一种合理的机制依赖于家庭的敦促易于使用的美食。

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