What Is ESG and How Does It Work?

If you have been trying to lose weight but feel stuck between medications, diet programs, and bariatric surgery, you are not alone. Many patients want a treatment that is effective but less invasive than traditional weight-loss surgery. That is where Endoscopic Sleeve Gastroplasty, also known as ESG or EndoSleeve, may be an option.

ESG is a minimally invasive weight-loss procedure performed through the mouth using a flexible camera called an endoscope. Unlike surgical sleeve gastrectomy, ESG does not require abdominal incisions and does not involve removing part of the stomach. Instead, the stomach is reshaped from the inside using sutures to reduce its capacity and help patients feel full sooner.

What Is ESG?

Endoscopic Sleeve Gastroplasty is a non-surgical, endoscopic procedure designed to make the stomach smaller and more tube-shaped. During the procedure, the physician places sutures inside the stomach to fold and tighten it. This reduces the amount of food the stomach can comfortably hold.

The goal is not simply to “make the stomach smaller.” The goal is to help patients change the way they eat, feel satisfied with smaller portions, and support long-term weight loss when combined with nutrition, activity, and follow-up care.

Is ESG the Same as Sleeve Gastrectomy?

No. This is one of the most common misunderstandings.

A surgical sleeve gastrectomy is a bariatric operation where a large portion of the stomach is permanently removed through laparoscopic or robotic surgery.

ESG/EndoSleeve is different. It is performed through the mouth with an endoscope. No part of the stomach is removed. There are no external abdominal cuts. The stomach is folded and sutured internally to create a smaller sleeve-like shape.

Both procedures aim to limit how much a person can eat, but they are not the same procedure.

How Does EndoSleeve Work?

EndoSleeve works in several ways.

First, it reduces the stomach’s capacity. After ESG, patients typically feel full with smaller meals. This can help reduce portion sizes and daily calorie intake.

Second, ESG changes the shape of the stomach. By creating a narrower, sleeve-like stomach, food may move differently through the stomach, which may help with satiety and appetite control.

Third, ESG provides a physical tool to support behavior change. The procedure is not a substitute for healthy habits. It is a tool that can make lifestyle changes more realistic and sustainable.

What Happens During the Procedure?

ESG is usually performed under anesthesia. The physician passes an endoscope through the mouth and down into the stomach. Using a specialized endoscopic suturing device, the physician places a series of stitches inside the stomach to reduce its size and reshape it.

Because the procedure is performed through the mouth, there are no abdominal incisions. Most patients go home the same day or after a short observation period, depending on the program and individual medical factors.

Who May Be a Candidate for ESG?

ESG may be considered for adults who are overweight or have obesity and have not achieved adequate weight loss with diet and lifestyle changes alone. It may be especially attractive to patients who are not ready for bariatric surgery or who may not qualify for surgery.

A consultation is important because candidacy depends on several factors, including BMI, weight-loss goals, medical conditions, prior stomach surgery, eating patterns, reflux symptoms, and overall health.

ESG is not the right option for everyone. Some patients may benefit more from bariatric surgery, medication, or another treatment plan. The best choice depends on the individual.

Is ESG Safe?

ESG is considered minimally invasive, but it is still a medical procedure and does carry risks. Potential risks may include bleeding, infection, pain, nausea, vomiting, leakage around sutures, or complications related to anesthesia. Serious complications are uncommon but possible.

This is why ESG should be performed by an experienced physician within a comprehensive program that provides careful evaluation, procedure expertise, and long-term follow-up.

ESG Is a Tool — Not a Shortcut

The most successful patients understand that ESG is not magic. It is a tool. The procedure helps reduce stomach capacity, but long-term success depends on how that tool is used.

Patients still need to focus on protein intake, hydration, portion control, physical activity, sleep, and follow-up visits. The procedure can help make these changes easier, but it does not replace them.

Ready to Learn More?

If you would like to find out whether EndoSleeve may be right for you, schedule a consultation with our team. We will review your goals, answer your questions, and help you understand the safest and most effective path forward.