Obesity is a huge problem. In fact, more than two billion people around the world suffer from health problems associated with obesity.

Researchers looked at data from nearly 200 countries in 2015. It showed out of the four million deaths attributed to weight in 2015, the United States and China had the highest number of obese adults. And China and India had the highest numbers of obese children.

The report was published in The New England Journal of Medicine.