Introduction: In modern society, many people eat a high-fat diet, and their three meals are irregular. Some people like to eat midnight snack but don't like sports, and the pressure of life and work is great, which leads to the increasing number of overweight and obese people in China. However, there are indeed a small number of people who are not fat and thin all the year round. What's going on here?

The digestive system is relatively poor. Since childhood, the digestive system is weak, and the ability to digest food is also weak. Personal intestinal absorption is not good, no matter how much you eat, you can't digest it. There are not a few such people, and their general physique will be weak, which needs careful conditioning.

Healthy Eating Some people eat a lot of fruits and vegetables, but the calories are not necessarily high, because these foods are relatively low in calories. Different diets provide different nutrients and calories for the human body. For example, for the same number of cakes and steamed bread, the calories of cakes are 1.5 times that of steamed bread. In addition, cooking methods will also become a factor in fat growth. Generally speaking, vegetables with the same weight are cooked in oil more than in water.

Genetic factors Why do some people always eat less fat? That's because their genes are good. 20 1 1 year, the British magazine Nature published a research report completed by researchers from Britain, Switzerland, France and other countries. The researchers investigated the genetic data of more than 95,000 people, and found that about one person in every 2,000 people has an extra copy of a certain position of chromosome 16. The definition of ultrathin here is that the body mass index (BMI) is lower than 18.5, which is unhealthy. Explain why some people are thin, which is determined by their genes. Scientists are still studying how these lean genes cause human emaciation, and if the molecular mechanism is clarified, they can be used to treat obesity.