In your childhood, the fat volume increases by increased fat cell multiplication which results in more numbers of fat cells. Following adolescents, fat volumes increase by an increase in the size of the fat cells there. An exception to the rule is a client who is overly obese, termed morbid obesity, in which the fat cells can continue to multiply well into adulthood. When a client undergoes liposuction, the fat cells are literally stripped out leaving fewer fat cells in the body. However, if the client does not watch their diet and does not alter their lifestyle, they may regain their weight but not in the areas that have been liposuctioned.