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Mini Gastric Bypass (OAGB/MGB) is a weight loss surgery that reduces the size of the stomach and reroutes the digestive tract to limit food intake and nutrient absorption. It involves creating a long, narrow stomach pouch and attaching it to a loop of the small intestine, bypassing a portion of the bowel. This leads to effective weight loss by restricting calorie intake and altering hunger-related hormones.
Preparation: Before the procedure, patients undergo a pre-operative assessment to evaluate their overall health, including nutritional and psychological evaluations. A special liver-shrinking diet is usually required for 2–4 weeks before surgery to make the procedure safer and easier. Patients should follow fasting instructions and arrange transportation, as driving after surgery is not advised.
Procedure: Performed under general anaesthesia, the surgery is typically done laparoscopically using small incisions. The surgeon forms a narrow tube-shaped pouch from the stomach and connects it to the small intestine, bypassing the upper part of the digestive tract. The procedure usually takes around 1.5 to 2 hours.
Recovery: After surgery, patients may feel some discomfort and fatigue, which is managed with pain relief and a gradual return to normal activities. A specific diet progression—from liquids to soft foods to solids—is followed post-surgery. Most people resume light daily activities in about 1–2 weeks, and full recovery generally takes 4–6 weeks, depending on the individual and adherence to medical advice.
