Modernized & Made Simpler The Mini Gastric Bypass procedure was developed in 1997 with the goal of duplicating the excellent weight loss results of traditional Roux-en-Y gastric bypass surgery while simplifying the procedure, shortening operating times and reducing complications. As tracking research data has accumulated, the Mini Gastric Bypass procedure has gained popularity as the modern alternative to traditional Roux-en-Y gastric bypass surgery –– excellent results, a simpler, more streamlined procedure and reduced overall complication rates. How The Mini Gastric Bypass Works The Mini Gastric Bypass works two ways to help you lose weight. First, it reduces the size of your stomach, restricting the amount you can eat. Next, it reduces the absorption of what food you do eat, by bypassing a portion of your intestines. This dual-stage approach has been shown to be highly effective when combined with changes to eating and lifestyle habits. You feel fuller, faster. And absorption of food is reduced.