In a study of 33 years of trends in Body Mass Index (体重指数) across 200 countries, the scientists found that people worldwide are getting heavier that most of the rise is due to gains in BMI in rural areas.
BMI is an internationally recognized measurement toolgives an indication of whether someone is a healthy weight. It is calculated by dividing a (person) weight in kg by their height in meters squared. and a BMI of between 19 and 25 (consider) healthy.
The study found that between 1985 and 2017, average rural BMI increased 2.1 in women and men. In cities, however, the gain (be) 1.3 in women and 1.6 in men. The researchers described “striking changes” in the geography of BMI. Tn 1985，urban men and women in more than three quarters of the countries (study) had higher BMIs than men and women in rural areas. But 30 years later, the BMI difference between urban and rural people in many countries had narrowed (sharp).
This may be due to some disadvantages for people (live) in the countryside, including (low) levels of income and education, higher costs of healthy foods, and fewer sports facilities.
