"In terms of environmental impact, the lean population has a much smaller carbon footprint," Edwards said.

爱德华称：“就对环境的影响而言，体型瘦小人群的碳足迹要小得多。”

The population with 40 percent obese people requires 19 percent more food energy for its total energy expenditure than the population with 3.5 percent obese people, the study showed.

研究显示，拥有40%肥胖率的人口，其所需能源消耗要比肥胖率为3.5%的人口多19%。

This 19 percent increase in food consumption translates into an increase of 270 million metric tons of greenhouse gas emissions, the study said.

这19%的食物消费增长相当于新增2.7亿吨温室气体的排放。

"The findings make sense and highlight an important global co-benefit of losing weight, along with the significant personal health benefits," said Patrick Kinney, associate professor at Columbia University’s Mailman School of Public Health, who was not involved in the study.

哥伦比亚大学邮差公共卫生学院的副教授帕特里克·凯尼并未参与此项研究，但他认为：“这些结果非常有意义，它们揭示了减肥是为了全球的共同利益，且对个人健康也益处良多。”

In terms of obesity rate, the U.S. population is not far off from the overweight population model in this study. The country has 33.3 percent obese people, according to the Mayo Clinic.

按照美国目前的人口肥胖率，研究中的超重人口模型并非遥不可及。根据梅奥·科里尼克的数据，美国现在拥有33.3%的肥胖人口。

The study suggests that governments have a responsibility to encourage people to be more physically active, Edwards said. Active transportation, such as cycling and walking, helps maintain a healthy weight but requires safe streets, he said.

爱德华认为，该项研究建议政府应承担其责任，鼓励人们参加更多的体育活动。诸如骑车和散步等积极的运动，可以帮助保持健康的体重，但这需要安全的街道。

Although climate change has come into the forefront as a major world problem recently, this is not the first time scholars have thought about the connection between fossil fuel and body fat.

虽然气候变化最近已经作为一个世界性难题提上议程，但这并非学者们第一次考虑化石能源和人体脂肪之间的联系。

In 1978, a year the United States experienced an oil shock, a study in the American Journal of Public Health showed that if all overweight people in the country aged 18 to 79 reached their optimal weight, the resulting energy savings would equal 1.3 billion gallons of gasoline.

早在1978年，美国经历石油危机之时，《美国公共健康杂志》的一项研究就显示，如果美国从18岁到79岁的所有超重人口都保持理想体重，那么由此节省下来的能源相当于13亿加仑汽油。

After the dieting period, about 750 million gallons of gasoline would be saved every year, said the authors, Bruce Hannon, professor at the University of Illinois, Urbana-Champaign, and Timothy Lohman, now professor emeritus at the University of Arizona.

据伊利诺斯大学香槟分校教授布鲁斯·汉农和亚利桑那大学的荣誉教授蒂莫西·洛曼估计，在节食期过后，大约每年将节省7.5亿加仑汽油。

Today, research has shown that the obesity epidemic costs the United States about 0 billion a year, said Dr. Martin Donohoe of Portland State University, who runs the Web site Public Health and Social Justice. In terms of energy expenditure, the average food product travels 1,500 miles to get to your table, he said.

来自波特兰州立大学的马丁·多诺霍教授说，目前的研究已经显示美国每年因肥胖症流行而损失了一千亿美元，按照其能源消耗计算，食品在抵达餐桌之前平均需要旅行1500英里。

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