ESG in Bangkok: Endoscopic Sleeve Gastroplasty for Non-Surgical Weight Loss

What is ESG?

ESG reshapes the stomach into a narrower, tube-like (sleeve) form using an endoscope — a slim, flexible camera passed through the mouth into the stomach — together with a specialized suturing device that folds and stitches the stomach wall from the inside to make it smaller.

What makes ESG different from traditional weight-loss surgery is that there are no abdominal incisions, no external scars, and no part of the stomach is removed. Everything is done through the mouth, making it minimally invasive compared with surgery. In many cases ESG can also be adjusted or revised later, unlike surgery, which removes stomach tissue that cannot be restored.

At YOUNIFY Clinic in Silom, Bangkok, the procedure is performed under the care of our medical team, using techniques and equipment that meet recognized international standards.

How does ESG work?

Once the stomach is sutured into a smaller shape, two effects help with weight management:

• You feel full sooner and for longer. With less internal volume, smaller portions create fullness, making it easier to control how much you eat without constant hunger.
• Food moves through more slowly. The tube-shaped stomach slows how quickly food leaves, so fullness lasts longer and snacking between meals tends to decrease.

Who is a candidate for ESG?

ESG is often considered for people whose BMI falls in the overweight-to-obese range (commonly around 27–40) who have not reached their goals through lifestyle changes alone, people who do not want or are not suited to bariatric surgery but want a less invasive option, and people carrying excess weight together with related conditions such as elevated blood sugar, high blood pressure, abnormal cholesterol, or sleep apnea. The final assessment is made by the medical team.

ESG may not be suitable for those with certain digestive conditions, such as an untreated stomach ulcer, bleeding disorders, or previous stomach surgery. For this reason, everyone should have an evaluation and consultation with the medical team to determine whether ESG fits their body and goals.

How much weight loss can you expect?

The most common question is “how much will I lose?” Based on medical data, typically around 15–20% of body weight over one year; individual results may vary.

For example, someone starting at 90 kg might lose roughly 13–18 kg over a year — but this is not a fixed outcome. Actual results depend on eating habits, physical activity, starting weight, and consistent self-care.

The YOUNIFY medical team always emphasizes that ESG is a tool that makes behavior change easier — not a one-time fix. Patients who see strong, lasting results usually use the period after the procedure to build new eating and lifestyle habits alongside it.

The procedure, recovery, and aftercare

Before: The medical team reviews your history, examines you, and may perform a preliminary endoscopy to assess suitability, with preparation guidance such as fasting beforehand. For international patients, this can often be coordinated efficiently within your trip.

During: The procedure is done through the mouth with an endoscope, under sedation managed by the medical team, so you do not feel pain during it. It generally takes a little over an hour, and because there are no external incisions, most patients go home the same day or after a short observation period.

Recovery: Typically about 1–3 days. In the early period you may have mild abdominal discomfort, nausea, or fullness, which usually improves over time. The medical team provides care and appropriate medication to ease symptoms.

Eating afterward: Progression is gradual — from liquids to soft foods to normal portions — following guidance from the medical team and nutritionist, with scheduled follow-ups. This continued care is a key reason results last.

ESG vs. surgery, balloon, and GLP-1

Each option has its own strengths and limits; the choice should be made with the medical team based on your body and goals.

• ESG (endoscopic suturing): No surgery, no external scars, no stomach removed, short recovery, and often adjustable — for those wanting a less invasive alternative to surgery.
• Sleeve gastrectomy (surgery): Irreversibly removes part of the stomach; often greater weight loss, but involves incisions and a longer recovery — for patients whose weight the surgeon considers to warrant it.
• Gastric balloon: A temporary device placed to reduce space, removed after a set period, unlike ESG which reshapes the stomach itself.
• GLP-1 medications: Help manage appetite and blood sugar, used under a doctor’s supervision, alone or alongside a procedure in some cases.