FACT:  Fat never moves around the body any more than any other body tissue can travel.  When we are born, we are given a number of fat cells in our body which, with only minor exceptions, never changes throughout our life.  As we gain weight, each of the fat cells in our body increase in volume, and they then shrink with weight loss.  With liposuction, fat cells are removed in the suctioned area, so that there are fewer fat cells there to enlarge and the process of liposuction also helps hold the remaining fat cells in place.  When someone gains weight, the fat in the adjacent areas appear to enlarge more than they do in the suctioned areas, giving the appearance that the fat has traveled.  While it isn't essential, it is preferable to be close to one's desired weight prior to liposuction.  Liposuction should never be considered a weight loss technique.