Hi. Here is the short explanation:
1) After adolescence, we do not make new fat cells. When you gain weight, the same number of fat cells just get bigger, and they shrink when you lose weight. With liposuction, a few million fat cells are removed in the treated areas, and they do not come back. That is why the improvement in CONTOUR is so long lasting.
2) Of course this does not mean that you cannot gain weight. But if you do, it will be more evenly distributed, and you will not get your old problem bulges back. For example, we have seen young women who had liposuction of the thighs get pregnant and put on 50 pounds. They were really overweight, but the saddle bags did not come back.