Dr Murat Ustun
Bariatric surgeon with 8,000+ successful procedures, IFSO member and pioneer of ESG in Turkey.
Decision Guide
ESG vs Gastric Sleeve: Which Should You Choose?
One is a scarless endoscopic procedure with same-day discharge; the other is the world's most performed weight loss operation. Here is the honest comparison — including when we advise against each.
- Total weight loss — ESG
- 15–20%
- Total weight loss — ESG
- Total weight loss — sleeve
- 25–30%
- Total weight loss — sleeve
- Incisions with ESG
- 0
- Incisions with ESG
ESG vs Surgical Sleeve at a Glance
| Factor | ESG (Endoscopic) | Gastric Sleeve (Surgical) |
|---|---|---|
| Technique | Stomach sutured smaller from inside — no cuts | ~80% of stomach surgically removed |
| Total body weight loss | 15–20% | 25–30% |
| Anaesthesia & duration | General, 60–90 min | General, ~60 min |
| Hospital stay | Same day or 1 night | 2–3 nights |
| Back to work | 3–5 days | 10–14 days |
| Scars | None | 5 small keyhole scars |
| Reversible / adjustable | Largely — can be re-tightened | No — permanent |
| Effect on reflux | Usually improves | Can worsen (up to 55% GERD) |
| Best BMI range | 30–40 (ESG-Max up to ~45) | 35–55+ |
| Price at IBC (all-inclusive) | From £4,950 | From £2,950 |
The Core Trade-Off
The decision comes down to weight loss power versus invasiveness. The surgical sleeve removes stomach tissue permanently, produces roughly a third more weight loss, and remains the benchmark for BMI above 40. The ESG achieves 15–20% total body weight loss with no incisions, no removed organ, a 3–5 day recovery, and a safety profile closer to a diagnostic endoscopy than an operation.
Crucially, ESG keeps every future option open: if your weight loss goals change, an ESG can later be converted to a surgical sleeve or bypass. A surgical sleeve cannot be undone.
Choose ESG If…
- Your BMI is 30–40 and you want meaningful, durable weight loss without surgery
- You have acid reflux — ESG usually improves it, a sleeve can worsen it
- You can only take 3–5 days away from work or family
- You want no scars and no permanent anatomical change
- You're not eligible for surgery, or the idea of it is what has stopped you acting
Choose the Surgical Sleeve If…
- Your BMI is above 40–45, where surgery's extra weight loss changes health outcomes
- You have significant type 2 diabetes — surgery's metabolic effect is stronger
- You want the maximum, most-studied long-term result in a single procedure
- Budget matters — the sleeve package is £2,000 less than ESG
Quick Self-Check
ESG is likely your best starting point if most of these apply:
- BMI between 30 and 40
- Reflux or heartburn already an issue
- Strong preference to avoid surgery and scars
- Need to be back at work within a week
- Comfortable with 15–20% total body weight loss as the goal
If your BMI is over 45, or diabetes control is the priority, read our sleeve vs bypass comparison instead — that is likely your real decision.
Experienced in Both — So the Advice Is Neutral
Dr Ustun performs 2,000+ endoscopic procedures alongside surgical sleeves and bypasses. When we recommend one over the other, it is because it fits you — not because it is the only tool we have.
JCI-Accredited Hospital
All procedures are performed at Liv Hospital, Istanbul — holding the gold-standard Joint Commission International accreditation.
Transparent All-Inclusive Pricing
No hidden fees. Packages include hospital stay, pre-operative tests, transfers, hotel and dietitian aftercare.
Award-Winning Care
WhatClinic Patient Service Award winner six times (2019–2025), with dedicated UK-based aftercare coordinators.