Weight loss varies from patient to patient, as a number of factors can influence weight loss including age, pre-operative weight, gender and compliance with follow-up, dietary guidelines and lifestyle changes including exercise. Patients who have regularly scheduled follow-ups with the surgeon and program team tend to achieve maximum success.
It is important that you have realistic expectations regarding your weight loss goals when considering bariatric surgery. For people who have been obese, a healthy target BMI is often higher than the "normal" BMI of 18.5-24.9 and may be closer to the range of 20-28, depending on the person. The majority of weight is lost in the first year but continues over a period of 2-3 years.
The following is an average weight loss of excess body weight for each procedure:
- Sleeve Gastrectomy: 60 - 70 percent of excess weight
- Roux-en-Y Gastric Bypass: 70-75 percent of excess weight
- Single Anastomosis "Loop" Switch: 75 - 90 percent of excess weight
The amount of weight you lose is affected by the procedure you choose, but more importantly your commitment to a healthy diet, exercise, and lifestyle changes. We have found that patients who are successful in losing weight and keeping it off long term,
- Change their eating habits and follow dietary guidelines
- Are physically active and exercise daily
- Attend scheduled follow up appointments
- Take advantage of program resources
Patients who aren't successful, revert to old eating habits, don't exercise, don't follow up with their surgeon or program team and don't follow dietary guidelines.