While it is widely believed (and even doctors incorrectly advise patients of this) that we have a fixed number of fat cells, and weight gain or loss merely changes the size of fat cells, the truth is that we do have the ability to grow new fat cells (hyperplasia). We also have the ability to increase the size of cells with weight gain (hypertrophy) and shrink the size of cells with weight loss (atrophy or hypotrophy). Morbidly obese people have tens to hundreds of millions more fat cells than individuals of normal weight, and their fat cells are larger. So, when we remove fat cells with liposuction, we do reduce the number of fat cells. If our weight remains the same, we maintain our sculpted results. Minor fluctuations in weight don’t change the results much. But, if we gain a significant amount of weight, we gain it everywhere, including the area where liposuction was performed, not by just increasing the cell size, but by stem cells located in the fat that are triggered to produce brand new cells. The best plan after liposuction is to maintain a stable weight, or mild weight loss to preserve your excellent results.