Biliopancreatic Diversion with Duodenal Switch (BPD-DS) is a weight loss surgery procedure that helps patients achieve significant weight loss by limiting the amount of food that can be consumed and reducing the absorption of nutrients. This procedure involves the rerouting of the small intestine to the lower part of the stomach and bypassing the upper portion of the small intestine, where most nutrient absorption occurs.

The BPD-DS procedure involves the creation of a small stomach pouch and the detachment of the majority of the stomach from the small intestine. This limits the amount of food that can be consumed, promoting early feelings of fullness and reducing overall food intake. The detached part of the stomach is reconnected to the small intestine much further down the line, bypassing a significant portion of the small intestine and reducing the amount of calories and nutrients absorbed. As a result of the reduced absorption of calories and nutrients, patients experience significant weight loss, which can improve their overall health and quality of life