What is considered obese? This is a question that many people are confused about. What is the standard of obesity? Director Yang Ling, senior nutritionist of Beijing Ruijing Diabetes Hospital, said that to judge whether a person is obese or not, one cannot simply use weight to measure. If a tall person and a short person weigh the same, the latter is obviously more obese than the former. Therefore, the current international common body mass index (BMI) to measure obesity. Body mass index is equal to weight (kg) divided by height (m) squared. Waist circumference is an important indicator of abdominal obesity, which reflects the degree of abdominal fat accumulation, which is associated with a series of metabolic abnormalities. The World Health Organization specifies the limits of obesity, BMI ≥ 25 for overweight, ≥ 30 for obese. But this is the standard of the western population, and the Asian population is different, can not be equal to a delineation. China obesity working group according to the 1990s Chinese population related data summary analysis report, for the first time proposed suitable for Chinese adults obesity standards, that is, BMI ≥ 24 for overweight, ≥ 28 for obese; male waist circumference ≥ 85 cm, female waist circumference ≥ 80 cm for abdominal obesity standards.