The superficial layer is more dense and the fat is contained within pockets by fibrous bands. This is the cause of cellulite . This layer is difficult to change with traditional liposuction but may be helped with ultrasonic liposuction . The distribution of fat depends on a person's age, sex and race. Obesity can be a predisposing factor to eating disorders, especially in men .
Women tend to have more fat than men and it is found mainly in the hips, buttocks and upper thighs.
Men tend to have more fat in the abdomen and the back of the neck. The size and number of fat cells increase during the first five or six years of life. Although there may be an increase in the amount of fat during our teenage years, the number of cells usually remains constant. As we grow older the fat tends to leave the legs and relocate more centrally. The fat also goes internally, to lie inside the abdomen.