According to the distribution of fat in different parts of the body, obesity can be divided into abdominal obesity and hip obesity. Abdominal obesity is also called centripetal obesity (clinical standard name is central obesity), male obesity, visceral obesity and apple obesity. This kind of body fat is mainly deposited in the subcutaneous and abdominal cavity of the abdomen, while the limbs are relatively thin. Fat in hip obesity is mainly deposited in hip and leg, which is also called non-centripetal obesity, female obesity or pear-shaped obesity. The risk of complications of abdominal obesity is much greater than that of hip obesity. In addition, according to the age of onset, obesity can be divided into childhood onset, adolescence onset and adulthood onset.