In a study of 33 years of trends in Body Mass Index across 200 countries, the scientists found that people worldwide are getting heavier and that most of the rise is due to gains in BMI in rural areas.

在一项对200个国家33年内体重指数趋势的研究中，科学家们发现，世界各地的人们体重越来越重，而这主要是由于农村地区体重指数的增加。

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BMI, or body mass index, is a ratio of weight to height.

身体质量指数，是体重和身高的比例。

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The group was split into two weight categories based on BMI, body mass index.

这些死者，按照体重指数BMI分成2组。

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Body mass index,or BMI, is a measure of a person's weight in relation to height.

VOA: special.2011.02.15

While there is advice aplenty on how to lose pounds or kilograms, a new study focuses on middle aged and older women who maintain normal body weight, or BMI (Body Mass Index) and do not diet.

VOA: standard.2010.03.30

"The investigators examined changes in sugar-sweetened beverage consumption and then its association with change in body fatness or BMI (body mass index), and subsequent deaths from cardiovascular disease, diabetes and cancer, " says Rachel Johnson, professor of nutrition at the University of Vermont in Burlington and chair of the American Heart Assocation's Nutrition Committee, who was not involved in the study.

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Unfortunately, the recent Journal of the American Medical Association publication analyzing life expectancy correlations to one imperfect calculation of relative weight (BMI, the body mass index) distracts readers all-too-eager to cling to its implications that being chubby is actually better.

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Jain also gets his patients to use a body weight tracker called BMI by NutriSystem to track their body mass index, since depression is a mind-body disorder.

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