Q. How much weight can I expect to lose after bariatric surgery?
Doctor Answer is medically reviewed by SecondMedic medical review team.
The amount of weight you can expect to lose after bariatric surgery varies depending on several factors, including the type of surgery, your starting weight, your adherence to dietary and lifestyle changes, and individual metabolic factors. Here are some general guidelines on expected weight loss after bariatric surgery:
1. Gastric Bypass (Roux-en-Y) and Sleeve Gastrectomy: These procedures often result in significant weight loss. On average, patients can expect to lose about 60-70% of their excess body weight within the first 12 to 18 months after surgery. Excess body weight is the weight above a BMI of 25.
2. Adjustable Gastric Banding (Lap-Band): Weight loss with the Lap-Band tends to be more gradual compared to other procedures. Patients typically lose about 40-50% of their excess body weight, but the rate of weight loss may be slower.
3. Biliopancreatic Diversion with Duodenal Switch (BPD/DS): This procedure often results in the most significant weight loss. Patients can expect to lose around 70-80% of their excess body weight, but it may be associated with a higher risk of nutritional deficiencies.
It's important to note that weight loss after bariatric surgery is not uniform, and individual results may vary. Factors that can influence the degree of weight loss include:
- Adherence to dietary and lifestyle changes: Following a post-surgery diet, exercise, and lifestyle recommendations is crucial for successful weight loss.
- Starting weight: People with higher starting weights often lose more absolute weight, but the percentage of excess weight loss may be similar across different starting weights.
- Metabolic factors: Individual metabolic rates and genetics can influence weight loss outcomes.
- Support and follow-up: Regular follow-up with healthcare providers and support from a bariatric team can help ensure success and address any challenges that arise.
- Behavior and psychological factors: Emotional eating, disordered eating patterns, and psychological factors can affect weight loss outcomes.
It's essential to have realistic expectations and understand that bariatric surgery is not a guarantee of permanent weight loss. Long-term success depends on maintaining dietary and lifestyle changes. Additionally, bariatric surgery can lead to improvements in obesity-related health conditions, such as diabetes and hypertension, even before significant weight loss occurs. Consulting with a healthcare provider or bariatric surgeon can provide a more accurate estimate of expected weight loss based on your specific situation and the chosen surgical procedure.