Fat provides essential fatty acids and helps your body absorb certain vitamins.

脂肪提供重要的脂肪酸帮助身体吸收特定的维生素。

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Our diet also tends to be too high in fat, sugar and salt, and too low in fruit and vegetables that contain fibre and essential vitamins and minerals.

我们总是食用高脂肪，多糖和多盐的食物，但是含有纤维、基本的维生素和矿物质的水果和蔬菜实在是太少了。

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The result: processed foods, full of fat and sugar and low in essential nutrients, become the cheapest way to fill a hungry stomach.

结果，充满脂肪和糖以及缺乏基本营养素的加工食品成为最低廉的充饥方式。

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The plants can be deficient in certain things, especially fat soluble vitamins that come from meat and from essential amino acids.

植物中缺乏某些物质,特别是脂溶性维生素,那些只能从肉类和必需氨基酸中获得

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选