The Roux-en-Y gastric bypass is a common bariatric surgery where the stomach is divided into a small upper pouch and a larger lower portion. The small intestine is then rearranged to connect with the new stomach pouch. This procedure reduces food intake and limits calorie absorption, making it highly effective for weight loss.

Weight lost refers to the reduction in body weight that is typically achieved through lifestyle changes, medications, or bariatric surgeries like the RNY or gastric band. Weight loss, particularly significant or rapid weight loss, can have dramatic positive effects on a person's overall health, reducing the risk of heart disease, diabetes, and other obesity-related conditions. Successful weight loss usually requires long-term changes to diet, exercise, and behavior.

A mini gastric sleeve refers to a less invasive version of the standard sleeve gastrectomy. It’s a simpler procedure that results in a smaller stomach size and helps with long-term weight loss. While not as widely performed, it is an option for those seeking weight-loss surgery with fewer complications.

A sleeve diet plan involves gradual dietary progression after surgery, focusing on protein-rich foods, minimal carbohydrates, and small portion sizes. Long-term, patients must continue eating nutrient-dense, low-calorie meals to maintain weight loss. Key components include lean meats, vegetables, whole grains, and avoiding sugary and fatty foods.