Bariatric surgery modifies the anatomy of the stomach and digestive system or induces physiological changes in the body that alter energy balance and fat metabolism. These changes impact the amount of food consumed, the sensation of fullness, and the absorption of nutrients and minerals, resulting in successful weight loss.

What to Expect from Surgery

Realistic Weight Loss Expectations

Bariatric surgery provides a crucial pathway for recovering from obesity. However, it is essential for patients to understand that surgery acts as a “tool” in their lifestyle transformation, requiring full commitment to necessary lifestyle changes to achieve and maintain a healthy weight. The amount of weight loss varies based on several factors, including lifestyle, diet, physical activity, and overall dedication to changing old habits.

All three surgical procedures typically lead to significant total body weight loss within the first 12-18 months. Depending on the specific procedure performed, total excess weight loss can range from 60% to 80%, and in some cases, patients may reach their ideal body weight.

Excess Weight Loss:

• 60–80% within the first 12–18 months

• Some weight regain is common at 2–5 years

Average Weight Loss Timeline:

• 10–30% loss within 3 months

• 30–40% loss within 6 months

• 65–75% loss within 12–18 months

Note: These figures represent averages; individual results may vary.

While there’s no guarantee, adhering to postoperative instructions and making dietary and lifestyle changes can lead to substantial weight loss. It’s important to note that some weight regain is considered normal within 2 to 5 years post-surgery.