While conducting experiments using the low-calorie food substitute Olestra in potato chips, researchers found the substitute resulted in weight gain when consumed with other high-fat foods in mice.

研究人员用小白鼠做试验，在薯片中使用奥利·斯特拉油(Olestra，一种油脂代用品，不含胆固醇，低卡路里)，发现当与其它高脂肪食品一起食用时，会导致体重增加。

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"The fact that participants were willing to substitute part of a food item for the mere prospect of a relatively small monetary award is interesting," says Reimann.

“参与者愿意用食物的一部分，来换取得到相对较小金钱奖励的可能性，这一点很有意思。”赖曼说。

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This has become a quick fix to the "failure" of national production – increasing food supply has become a substitute for a real food security policy.

增加食物供给已成为每个国家应对产能不足的快速办法，这替代了在应对食物危机方面应采取真实的安全政策。

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President Obama has proposed replacing the regular consumer price index, or CPI, to adjust Social Security benefits with the chained CPI -- often called the cat food CPI because the index assumes that when the price of human food rises, seniors can substitute cheaper food to get the same nutrition.

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And tinkering with food oils is no substitute for heart-protecting drugs or sweeping changes in diet.

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Quite literally: death is a substitute for having no food.

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