There are about a billion obese adults in the developing world. There were 250 million in 1980. The number has almost quadrupled in 35 years. A report from an overseas development group said 30% of people are overweight. The group said governments should change what people eat. People are fatter because they have more money and eat more fast food. They are eating less traditional, healthier food. A report author said: "Changes in lifestyle, the increasing availability of processed foods, and advertising have all led to dietary changes."

It's not all bad news. Denmark and South Korea have done a lot to manage the obesity problem. Denmark has laws against some fats. Restaurants and food companies must be very careful about how they cook their food. South Korea warned its people about the dangers of obesity. A few decades ago Korea's government told people to eat traditional Korean food. This is low in fats and oils, high in vegetables, and has a lot of sea food. There was a lot of public education and a lot of training. Koreans now understand that Korean food is good for them.