Namely: body mass index = weight (kg) (height m) 2.
According to the regulations of the World Health Organization, people with a body mass index greater than 25 are overweight and those with a body mass index greater than 30 are obese. By collecting and analyzing a large number of survey data of domestic population, scientists in China believe that the obesity standard suitable for China population should be that people with a body mass index greater than 24 are overweight and those with a body mass index greater than 28 are obese.
After five years' investigation and follow-up of 20,000 people in the Department of Epidemiology, Fuwai Hospital, China, it is suggested that the appropriate body mass index of China population should be between 19 ~ 23(kg/m2). The normal waist circumference of men in China should be controlled within 85 cm, that is, within 2 feet 6; Women's waistline should be controlled within 80 cm, that is, within two feet four, otherwise it will be among the obese.
The optimal blood pressure for China population is that the high pressure is less than14.7kpa (110mmhg) and the low pressure is less than/10 kPa (75 75mm hg). The range of serum total cholesterol was 140 ~ 179/dl.
When blood pressure, serum cholesterol and body mass index are within the above appropriate range, the incidence of chronic diseases and the risk of death caused by them will be minimized. Therefore, China people should learn all kinds of health care knowledge and apply it to practice, so as to achieve and maintain these appropriate health indicators.
Blood pressure is the lateral pressure of blood in blood vessels on the unit area of blood vessel wall. Because everyone's physique and specific situation are different, for example, people who exercise regularly can have blood pressure between 12 kPa (90 mm Hg) and 8 kPa (60 mm Hg). Moreover, blood pressure changes with different physiological conditions, which is related to blood flow and peripheral vascular resistance. Therefore, even normal people without hypertension will have changes in blood pressure after exercise or emotional state. Some people's systolic blood pressure can reach 24 ~ 25.3 kPa (180 ~190 mm Hg) after exercise, but this is not hypertension. Therefore, when measuring blood pressure, it should not be defined as hypertension because of a single increase in blood pressure (unless the blood pressure is very high), but should be based on the average blood pressure measured at different times.