The standard weight for a 172cm height is generally around 67kg if a simple rough calculation is made. The simple way to calculate the standard weight is height (cm) – 105, the resulting value is the standard weight. However, the standard weight is not fixed and is related to gender and living area. The initial self-measurement is usually done using the body mass index, or BMI, BMI = weight (kg) รท height^2 (m). Usually the value of BMI in 18.5-24 is normal weight, while BMI value greater than 28 generally indicates the emergence of obesity. In addition, the standard weight for people in southern China and northern China is different. Weight may also be related to genetics, lifestyle, such as family type obesity, or unhealthy diet structure, lack of exercise, etc., can lead to obesity, can be improved by controlling dietary intake and strengthening exercise in an appropriate amount. In addition, body shape may be related to abnormal hormone secretion diseases, such as Cushing’s syndrome, hypothyroidism, etc. may lead to obesity, while hyperthyroidism, anemia, etc. may cause wasting. Glucocorticoids, insulin, etc. may also affect a person’s weight. Therefore, people who are excessively obese or wasted are advised to seek prompt medical attention to clarify the specific cause.