(CNN) More than 2 billion adults and children globally are overweight or obese and suffer health problems because of their weight, a new study reports. This equates to one-third of the world's population carrying excess weight, fueled by urbanization, poor diets and reduced physical activity. Body mass index is the ratio between a person's weight and height; a BMI of 25 to 29.9 is considered overweight, while anything over 30 is obese. The global obesity pictureThe researchers analyzed data from 68.5 million people between 1980 and 2015 to explore trends as well as figures regarding overweight and obesity rates. In terms of numbers, the large population sizes of China and India meant they had the highest numbers of obese children, with 15.3 million and 14.4 million, respectively.

Source: CNN June 12, 2017 15:19 UTC