Body mass index is body mass index and body fat index, and the normal range is generally set at 18-24, preferably at 20-24. If it is lower than 18, people will lose weight. Body mass index is generally calculated by dividing weight by the square of height. Now it is necessary to judge normal people, overweight and obesity. According to national standards, the body mass index should be overweight at 18-24 and 24-28. If you are over or only 28 years old, you are considered obese.

If it belongs to abdominal obesity, it has a great influence on subsequent organs. Now, in addition to body mass index, waist circumference and waist-hip ratio are also used to judge obesity. Waist circumference mainly reflects abdominal obesity. When there is no better way, the body mass index can roughly measure whether you are overweight or obese, and it is widely used now. The normal body mass index of adults ranges from 18.5-23.9. Body mass index refers to the body mass index, which is mainly used to judge whether a person's weight is standard. Its calculation formula is weight (kg) divided by the square of height (m). If the calculated value is between 18.5 and 23.9, it is the standard.

If the calculated value is lower than 18.5, it belongs to thin body. It is necessary to change incorrect eating habits, pay attention to the eating rules of three meals a day, and appropriately increase the intake of protein, carbohydrates and related trace elements. If you are too thin, it will have a certain impact on your immune ability, and you are prone to catch a cold and other related diseases.