With Gastric Sleeve Surgery you're estimated to lose 62 lbs over 12-18 months. Ideal Body Weight (IBW) represents the weight a person should be for their height. Excess Body Weight (EBW) is the amount of weight a person is over their IBW., Here’s a graph of average weight loss in sleeves at 3, 6, 9, 12, 18 and 24 months. Many factors can influence your weight loss results after gastric sleeve surgery. These include initial weight, diet, lifestyle, age, race, health problems and the surgeon’s skill., Most patients lose between 2-4 lbs (0.9-1.8kg) every week for about 6-12 months. This results in a monthly weight loss of about 8 to 16 pounds. More weight is lost in the first month than in any other month, mostly due to the way eating is structured in that month., Most people lose 20-30% of their excess weight within the first year after surgery, with the most drastic weight loss happening within the first six months. Long-term success depends on following nutritional guidelines, staying physically active, and attending regular medical follow-ups., Studies have demonstrated that gastric sleeve surgery can lead to significant weight loss, with the average weight loss ranging from 50-70% of excess body weight (EBW) within the first year. Excess body weight is the difference between an individual’s ideal body weight and their current weight., One Swiss study showed that patients lost on average more than 57% of their excess body weight after having the gastric sleeve. While some of these numbers are lower than others, it is clear that patients do lose a lot of weight and quickly after this weight loss surgery..