As with all weight loss procedures, including sleeve, we expect a period of rapid weight loss over the first few years after surgery to be followed by a long period during which some weight will be regained. Most studies show this pattern for all procedures. Of course, there are exceptions, but this would be the norm.
In the case of the sleeve there can be various reasons why weight is regained. In cases of slow regain we anticipate this is due to the body adjusting to the smaller stomach, but in cases where weight regain is faster it will usually be due to the sleeved stomach dilating (stretching), and the benefit of the tight sleeve being lost. The stomach is an amazing organ. Over time it will stretch and this is more likely when patients are unable to follow the post-operative diet regime, and eat portions that are too big. In extreme cases the stomach can get back to a size similar to what it was originally. Of course, it may also be the case that the sleeve was large in the first place. When surgeons do a sleeve procedure they will measure the size of he new stomach using a device called a bougie. This is placed into the stomach through the mouth and they use it as a guide when sizing the smaller ‘sleeve’ stomach. There are different sizes of bougie and the size used is down to surgeon preference. It means some people will have had a bigger sleeve from day one.