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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Calculate Your Body Mass Index (BMI).

计算身体质量指数(BMI)。

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By controlling for individual and environmental influences on weight, such as income and health, they then measure whether food-price changes affect body-mass index (BMI).

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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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The study also took into account body mass index (BMI) - a measure which relates weight to height.

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