The limits on liposuction remain a point of contention and debate. The generally accepted limit is 5 liters of lipoaspirate (combination of fat, blood, tumescent fluid). However, recent studies suggest the limit may be variable and seems to be associated with BMI. Higher BMI can safely tolerate higher volume liposuction. The primary concern in either case is related to fluid shifts and the physiologic consequences (Remember...studies have shown that nearly 70% of tumescent fluid is absorbed...depending upon the relative timing of tumescent and aspiration). Overall, it is important to remember that the goal of liposuction is an improved contour and not weight loss. Even at the 5 liter limit, a patient is losing less than 10 lbs. of fat within the lipoaspirate. As always, discuss your concerns with a board certified plastic surgeon.