1. This is related to the regional climate. In the alpine region, the habit of eating more and exercising less is an important reason for this phenomenon, while in the southern region, people's metabolism is faster and they are less likely to get fat because of the hot weather. According to statistics, Hainan is the slimmest area in China.

2. Eating habits. Northerners like pasta and southerners like rice. The heat of steamed bread with the same weight is much higher than that of rice (so Shandong people who are used to eating steamed bread always feel that rice is not enough). Coastal areas often eat seafood, while people in the north, especially in the northeast, are more accustomed to eating pork, mutton and high-calorie red meat, which is an important reason for the more serious obesity problem in the north.

The results of China obesity index research show that the average obesity rate (BMI28.0) in the northern region is over 35%, while the average obesity rate in the southern region is only 27%. With the general improvement of people's living standards, the obesity rate of residents in big cities such as Beijing and Shanghai is also high. Take Beijing as an example. At the age of 20 18-79, the obesity rate of permanent residents in Beijing has increased from 19. 1% to 2 1.9%, which means that one in five adults is obese.