Endoscopic Sleeve Gastroplasty (ESG): The Non-Surgical Option in Colombia

Between medication and surgery, there has always been a gap -- a BMI range where pills produce modest results and surgical procedures feel disproportionate to the problem. Endoscopic sleeve gastroplasty (ESG) fills that gap. It's not surgery. It's not a pill. It's a 60-90 minute endoscopic procedure that reduces stomach volume by roughly 60-70% without a single incision, and it's increasingly available at gastroenterology centres across Colombia.

ESG is not a replacement for surgical sleeve gastrectomy or gastric bypass. It produces less weight loss, and the long-term durability data is younger. But for the right patient -- BMI 30-40, motivated, and either unwilling or unable to pursue surgical options -- ESG offers a meaningful intervention with a recovery measured in days rather than weeks.

How the procedure works

ESG is performed entirely through the mouth. A flexible endoscope -- the same instrument used for diagnostic upper endoscopy -- is passed through the oesophagus into the stomach. A suturing device attached to the endoscope places a series of stitches through the stomach wall, folding the tissue inward in a pattern that reduces the stomach's functional volume.

Think of it as internal tailoring. The stomach is not cut, not stapled, and not removed. The sutures create internal folds that make the stomach smaller and slower to empty, producing earlier satiety (feeling full sooner) and reduced meal volume.

The procedure takes 60 to 90 minutes. Most providers use deep sedation rather than general anaesthesia, which means a shorter recovery and fewer anaesthesia-related risks. Patients typically go home the same day or after a single overnight observation.

The evidence: what ESG actually delivers

The key outcome metric for any weight-loss intervention is percentage of total body weight lost (%TBWL) at 12 and 24 months. Here's how ESG compares to the surgical alternatives:

ESG's weight-loss numbers sit between medication and surgery -- which is exactly where its clinical positioning belongs. The published data from multi-centre studies shows average total body weight loss of 15-20% at one year, with some centres reporting higher numbers in motivated patients with strong post-procedure dietary adherence.

Who qualifies for ESG

ESG occupies a specific candidacy window. The typical candidate has a BMI of 30 to 40, has tried and not succeeded with diet, exercise, and sometimes medication, and either does not qualify for surgical bariatric procedures (BMI below 35 without comorbidities), does not want surgical intervention, or has medical conditions that make general anaesthesia higher risk.

Patients with a BMI above 40 are generally better served by surgical options -- the additional weight loss from sleeve or bypass matters more at higher BMIs. Patients with prior gastric surgery, large hiatal hernias, or certain gastrointestinal conditions may not be candidates for ESG.

ESG as a bridge to surgery

Some patients use ESG as a first step. A patient with a BMI of 50 who needs to lose weight before qualifying for knee replacement, for example, might undergo ESG to achieve initial weight reduction, then pursue surgical bariatric options once the initial loss makes the surgical risk profile more favourable. This staged approach is legitimate and increasingly common.

ESG in Colombia: availability and cost

ESG is available at several gastroenterology centres in Bogotá and Medellín. The procedure requires a gastroenterologist trained in endoscopic suturing -- this is not a procedure every GI doctor performs. Ask about their specific ESG case volume and which suturing platform they use (the OverStitch system from Apollo Endosurgery is the most widely studied).

Pricing in Colombia typically runs $5,000 to $8,500 for the procedure, facility, sedation, and initial follow-up. In the US, the same procedure runs $10,000 to $18,000, and it is almost never covered by insurance in any country because most insurers still classify ESG as investigational despite FDA clearance.

Recovery and follow-up

Physical recovery from ESG is fast -- most patients return to normal activities within three to five days. But the dietary protocol is strict and non-negotiable. Typically: clear liquids for 24-48 hours, full liquids for one to two weeks, soft foods for two to four weeks, then gradual return to solid foods with permanently reduced portions.

The follow-up protocol matters as much as the procedure itself. ESG works by restricting volume, but long-term success requires behavioural change -- eating habits, food choices, and physical activity. Programmes that include structured nutritional counselling and follow-up produce better outcomes than those that perform the procedure and send you home.

For patients who had the procedure in Colombia and return home, the follow-up care article covers how to establish continuity with a local provider. And for the broader view of how ESG fits into the bariatric decision landscape, the complete bariatric guide covers all the options.

ESG is not surgery-lite. It's a different intervention for a different population. For patients in the BMI 30-40 range who want a meaningful, evidence-based procedure without the permanence and recovery of surgery, it's the most substantial option that doesn't require an operating room.