The gastric sleeve has been around since 1988, when it was first performed as one component of a more complex weight loss surgery called the duodenal switch. It wasn’t used as a standalone procedure until the early 2000s, and it took another decade after that to become the most popular bariatric surgery in the world. That roughly 35-year journey from surgical workaround to global standard is one of the more interesting stories in modern surgery.
The Sleeve Started as Part of a Bigger Operation
In 1988, surgeon Douglas Hess in Bowling Green, Ohio, developed the biliopancreatic diversion with duodenal switch, a procedure that combined stomach reduction with intestinal rerouting. One step of that operation involved removing about 75 to 80 percent of the stomach along its outer curve, creating a narrow, banana-shaped tube. That step was, in essence, a sleeve gastrectomy, though nobody called it that yet. Picard Marceau, a Canadian surgeon, published the first paper on the technique in 1993.
For the next decade, the sleeve existed only as a piece of a larger puzzle. No one considered it a complete weight loss surgery on its own.
How the Standalone Sleeve Emerged
The turning point came in 1999, when Michel Gagner performed the first laparoscopic (minimally invasive) version of the duodenal switch. The full operation was technically demanding and carried significant risk, especially for patients at very high body weights. So Gagner and other surgeons began splitting it into two stages: perform the sleeve first, let the patient lose some weight and recover, then go back months later to complete the intestinal bypass.
What surgeons noticed surprised them. Many patients lost so much weight after the sleeve alone that the second stage became unnecessary. By the mid-2000s, researchers began studying whether the sleeve could stand on its own as a complete bariatric procedure. The results were compelling enough that it gradually gained acceptance, first as an option for high-risk patients and then for the broader population seeking weight loss surgery.
A Slow Road to Insurance Coverage
Even as clinical evidence mounted, the sleeve faced institutional resistance. When Medicare issued its 2006 national coverage decision for bariatric surgery, it approved gastric bypass, the duodenal switch, and gastric banding. The sleeve gastrectomy was explicitly listed as non-covered. This meant that for years, patients who wanted the sleeve either paid out of pocket or relied on private insurers who were quicker to update their policies. Medicare’s exclusion reflected how new the standalone sleeve still was at that point, with limited long-term data compared to procedures that had been studied for decades.
Private insurance coverage expanded gradually through the late 2000s and into the 2010s as more data became available. The lag between surgical adoption and insurance approval is a common pattern, but it was particularly noticeable with the sleeve.
Rise to the Most Popular Bariatric Surgery
By the mid-2010s, the sleeve had overtaken gastric bypass as the most frequently performed weight loss surgery in the United States. Today, more than half of all bariatric procedures in the U.S. are sleeve gastrectomies, and the trend holds worldwide. The reasons are straightforward: the sleeve is technically simpler than bypass, doesn’t involve rerouting the intestines, has fewer long-term complications, and produces strong weight loss results for most patients.
A Springer Nature review tracking the procedure’s trajectory over 25 years described its rise as driven by “improved safety and effectiveness,” a combination that made it appealing to both surgeons and patients.
How the Technique Has Been Refined
The basic concept of the sleeve hasn’t changed: remove most of the stomach, leave a narrow tube. But the details have evolved considerably. One key variable is the calibrating tube (called a bougie) that surgeons insert to guide how wide the remaining stomach should be. Early procedures used a range of sizes, from 28 to 50 French (a unit of diameter). Over time, the field has converged on 33 to 36 French as the sweet spot, balancing effective weight loss against safety. Tubes larger than 40 French are associated with less weight loss, while very small tubes may increase the risk of complications.
Staple-line leaks, the most feared complication of the procedure, have also decreased over time. A large database study covering six years of sleeve gastrectomies found that only 0.17% of patients developed a leak within 30 days. Leak rates were significantly higher in the 2016 to 2019 period compared to 2020 and 2021, suggesting that techniques and safety protocols continue to improve.
What 10-Year Data Shows
Because the standalone sleeve is a relatively young procedure, long-term data has only recently become available. Multiple studies now report outcomes at 10 years or more. Across these studies, patients maintained between 42% and 70% excess weight loss at the decade mark, a wide range that reflects differences in patient populations and surgical techniques. A study by Kraljević and colleagues found that 61% of patients saw their type 2 diabetes resolve, while 60.5% had their high blood pressure resolve at the 10-year follow-up.
Weight regain remains the most common long-term challenge. Some patients regain a meaningful portion of their lost weight over the years, and a subset go on to have revision surgery, sometimes converting to a gastric bypass or duodenal switch. This is an active area of focus for bariatric surgeons, who are refining patient selection and follow-up protocols to improve durability.
Who Qualifies Now
The eligibility criteria for the sleeve have broadened considerably since its early days. Under the 2022 joint guidelines from the American Society of Metabolic and Bariatric Surgery and the International Federation for the Surgery of Obesity, bariatric surgery is recommended for anyone with a BMI above 35, regardless of whether they have other health conditions. For people with a BMI between 30 and 34.9, surgery should be considered if they have obesity-related conditions like type 2 diabetes, high blood pressure, sleep apnea, or fatty liver disease and haven’t achieved lasting results through non-surgical approaches. For Asian populations, the thresholds are lower: a BMI above 27.5 qualifies for surgery.
These updated guidelines represent a significant shift from the older standard that required a BMI of 40, or 35 with health complications. The expansion reflects growing evidence that the benefits of bariatric surgery extend to people at lower body weights, particularly those dealing with metabolic disease.