Gastric bypass is a well studied and effective weight loss operation that works by restricting the stomach and bypassing a portion of small intestine. We partition the stomach into two parts: a small functioning upper “pouch” and a disconnected lower “remnant” stomach. The pouch allows for restriction, limiting the amount of food you can eat. A length of small bowel is attached to this pouch to re-establish the digestive tract.
With gastric bypass, rapid weight loss typically occurs in the first 6-9 months with continued significant weight loss over 18 – 24 months when patients follow the recommended lifestyle changes. Clinical studies show the weight loss averages around 70% of excess weight. Results vary based on many factors including individual health, diet and exercise commitment, weight before surgery, and age.