Last time, we have already introduced the great damage of obesity to the cardiovascular system: it can have indirect adverse effects on the cardiovascular system indirectly through hypertension, dyslipidemia, diabetes, etc., on the one hand, and on the other hand, it can directly affect the structure and function of the heart. After understanding the dangers of obesity, many people who focus on their own health may have begun to pay attention to their weight. Then the next question comes: what is overweight, obesity? And how to determine whether they are overweight, obese? This article briefly introduces several means of self-testing to help you determine. First, the concept of obesity and typing World Health Organization (WHO) that obesity is the body’s excess calories into excess fat and accumulated in the body of a state. Excessive accumulation of fat in the human body, beyond the normal proportion, will make people’s health, shape and normal life affected, therefore, obesity is a chronic disease of excess fat. In accordance with the distribution of fat in different parts of the body, obesity can be divided into abdominal obesity and hip-type obesity, of which abdominal obesity is also known as central obesity, centripetal obesity, or visceral obesity, fat is mainly deposited in the abdominal subcutaneous and abdominal cavity; obesity according to the occurrence of the cause can also be divided into simple obesity and secondary obesity. Second, the self-diagnosis of obesity 1, body mass index (BMI) BMI is the body mass index (Body Mass Index), is currently the most commonly used indicators for the diagnosis of obesity, because of its simplicity and ease of implementation and eliminates the impact of different heights and is widely used. In 2013, the American College of Cardiology, the Endocrine Society, the Obesity Association and other obesity-related guidelines have selected this standard. Calculation method: only need to obtain height (m) and weight (kg) two anthropometric indicators, substituting into the formula BMI = weight (kg) / [height (m)]2, can be obtained. Diagnostic criteria: the normal range of BMI in Chinese population is 18.5-23.9kg/m2, the standard for overweight is 24-27.9kg/m2, and the standard for obesity is ≥28kg/m2. 2. Waist circumference, hip circumference, waist-hip ratio Waist circumference, hip circumference, and waist-hip ratio are the most important means to diagnose abdominal obesity and hip-type obesity, and the values of these several items reflect the total amount of fat and fat distribution, and are useful for the early prevention of obesity. These values can reflect the total amount of body fat and fat distribution, and have a positive effect on the early prevention of obesity, diabetes, cardiovascular diseases. Measurement methods are: (1) waist circumference (WC): let the subject feet apart 25-30cm, stand naturally, measurement position in the horizontal position of the anterior superior iliac crest and the lower edge of the rib line of the mid-point of the measuring tape close to the soft tissue; (2) hip circumference (HC) is to let the subject legs together upright, arms naturally down, the tape measure is placed in the front of the pubic symphysis and the back of the gluteus maximus muscle horizontal convexity; (3) waist circumference (HC) is to let the subject legs close together, arms naturally down, tape measure horizontal in the front and the back of the pubic symphysis and the gluteus maximus muscle convex; (4) waist circumference (WC) is the measurement method. (3) Waist-to-hip ratio (WHR) is waist circumference (WC) divided by hip circumference (HC). Diagnostic criteria: adult male waist circumference ≥ 85cm, adult female waist circumference ≥ 80cm can be diagnosed as obesity; if adult male waist-hip ratio ≥ 0.9, female waist-hip ratio ≥ 0.85 can be diagnosed as abdominal obesity. 3, the degree of obesity In addition to the above two means, the degree of obesity can also be used for simple assessment of obesity. Calculation method: obesity ( % ) = ( actual weight – standard weight ) / standard weight × 100%, of which the standard weight ( kg ) is equal to height ( cm ) minus 105 for estimation. Diagnostic criteria: obesity degree of 10%-19.9% for overweight, ≥ 20% for obesity. Although this method is not widely used, it is better than the simple and clear calculation. Third, summary Through the above calculation, do you have a general understanding of their own weight? If you belong to the overweight or obese range, then you need to take measures to control your weight.