来自《耶鲁大学开放课程：有关食物的心理学、生物学和政治学 第15集 第15集》

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  who are poor and don't
  只要花一点钱
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  have much money can get food inexpensively.
  就能得到廉价的食物
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  It's bad in a way because the foods
  坏处也是因为
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  that one can acquire inexpensively,
  廉价的食物
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  as we've mentioned before in class,
  就像我之前提到的
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  tend to be the highly processed, highly calorie dense,
  这些趋于高加工度 高热量密度
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  nutrient poor foods that contribute to malnutrition
  缺乏营养素的食物会导致一些人营养不良
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  in some families and over nutrition in others.
  和营养过剩的现象
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  We'll come back to why this is important later in the class.
  我在之后的课中会再来讲它为何如此重要
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  Let's talk about income and what it means in terms of health
  让我们谈谈收入以及这对健康意味着什么
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  and then we'll talk about diet nutrition specifically.
  之后我们就要具体讨论饮食营养了
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  If we look at this graph
  我们如果观察这张从1900年开始