The Western diet is high in sugar, fat, oil and meat. By eating these foods, people began to get fatter and sicker. David Tilman says overweight people are at greater risk of noninfectious diseases like diabetes (糖尿病) and heart disease.

　　Unfortunately when people become industrialized, if they adopt this Western diet, they are going to have these health problems, especially in developing countries in Asia. China is an example where the number of diabetes cases has been jumping from less than one percent to 10 percent of the population as they began to industrialize over a 20­year period. And that is happening all across the world, in Mexico, in Nigeria and so on.

　　And, a diet bad for human beings is also bad for the environment. As the world's population grows, more forests and tropical (热带的) areas will become farmlands for crops or grasslands for cattle. We are likely to have more greenhouse gas in the future from agriculture than that coming out of all forms of transportation right now.

　　Mr. Tilman calls the link between the diet, the environment and human health, “a trilemma” — a problem offering a difficult choice. He says one possible solution is leaving the Western diet behind.

　　语篇解读：本文是一篇说明文。《自然》杂志上一篇新的报告表示，西方饮食对人的健康和环境有不良影响，人们应警惕西方饮食带来的危害。

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