Roux-en-Y bypass is another term for the RNY procedure. This surgery helps patients lose weight by creating a small pouch from the stomach and connecting it directly to the small intestine, bypassing a portion of the digestive tract. The result is a reduced ability to absorb calories and nutrients. Patients who undergo RNY experience rapid weight loss, but it also requires them to make permanent changes to their diet and lifestyle to avoid complications like dumping syndrome, where food moves too quickly from the... +More

Stomach stapling is an older term for bariatric surgery procedures that reduce stomach size. It involves surgically creating a smaller stomach pouch using staples, which limits food intake. Modern techniques like gastric sleeve surgery have replaced traditional stomach stapling, but the principle remains the same—restricting food capacity.

Risks: Because gastric bypass is more complicated, it's riskier. Infection and blood clots are risks, as they are with most surgeries. Gastric bypass also makes hernias more likely, which may need further surgery to fix. Also, you may get gallstones because of the rapid weight loss.

After a gastric bypass, the volume the new, smaller stomach can hold is reduced from about 1 quart to about 1 ounce, or 2 tablespoons. Over time, the stomach pouch will stretch until it can hold 4 to 8 ounces, or about 1/2 to 1 cup, at a time.

Following gastric sleeve surgery, patients adhere to a post-op diet that gradually transitions from liquids to pureed foods, soft foods, and eventually solid meals. High-protein, low-carb meals are recommended to promote healing and support long-term weight loss while avoiding nutrient deficiencies.