Standard weight (male) = (height cm- 100)x0.9 (kg)
Normal weight: standard weight+-(how much) 10%.
Overweight: over standard weight 10% and under standard weight by 20%.
Mild obesity: 20% above standard weight and 30% below standard weight.
Moderate obesity: 30% above standard weight and 50% below standard weight.
Severe obesity: more than 50% of standard weight.
Introduction of international standard weight:
China people belong to Asian race, so the normal range of body mass index is below the standard. Some experts suggest that the best value of China people's body mass index should be 20-22, with a body mass index greater than 22.6 as overweight and a body mass index greater than 30 as obesity.
A standard widely used in the world to measure the degree of fatness and thinness of human body and whether it is healthy or not. When it is necessary to compare and analyze the influence of a person's weight on the health of people with different heights, the body mass index value is a neutral and reliable indicator.
The above reference sources:
Baidu encyclopedia-weight standard