We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Your personal data will be used for the personalization of ads and cookies may be used for personalized and non-personalized advertising. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit “Cookie Settings” to provide a controlled consent. Read our cookies policy here
Weight Loss Procedure
Endoscopic Sleeve Gastroplasty (ESG)
Everything you need to know about the non-surgical sleeve, from the experts that pioneered this innovative weight loss procedure.
Rated Excellent on
.
We Have Completed Over 10,000 Procedures
.
Over 2,900 Members In Our Facebook Community
Medically reviewed by Mr Jamie Kelly BM, BSc (Hons), FRCS
- Last Reviewed 17/08/2026
Endoscopic Sleeve Gastroplasty (ESG)
At Healthier Weight we were the first UK clinic to offer the Endoscopic Sleeve Gastroplasty (ESG), a non-surgical alternative to the surgical sleeve.
The ESG is a non invasive procedure that offers similar weight loss benefits to the surgical options but with a safer, lower-risk profile. It works by narrowing and shortening the stomach so that you feel full quickly and by slowing stomach emptying so you stay full for longer.
- Average Length of Stay
- Operation Duration
- Anaesthesia
- Recovery Duration
- Excess Weight Loss
- BMI Eligibility
- 1 Night
- 60 - 90 Minutes
- General Anaesthesia
- 7 Days
- 50 - 60%
- 30-50
-
Average Length of Stay
1 Night -
Operation Duration
60 - 90 Minutes -
Anaesthesia
General Anaesthesia -
Recovery Duration
7 Days -
Excess Weight Loss
50 - 60% -
BMI Eligibility
30-50
Health benefits of the ESG
60%
of type II diabetics are cured
70-80%
of patients with hypertension reduce or stop medication
80%
will have improvement in cholesterol levels
90%
will have improvement in reflux symptoms
More benefits
The major benefit of the ESG is that it is performed endoscopically with a stitching device placed into the stomach through the mouth. This means that, unlike surgery, there is no cutting or stapling, no scarring and no wounds. Therefore patients benefit from a faster recovery time and lower post-operative risks, both incidence rate and severity.
Studies also show that the rate of complications with ESG is low too. One study showed the post-operative complication rate to be as low as 2.4% (AlQuatani et al December 2018).
Through losing weight ESG patients will enjoy the same benefits that accrue from weight loss with any procedure, including improvements in
If you are managing existing health issues associated with your weight, you may wish to consider the sleeve and bypass as well as the ESG. Health improvements with the sleeve and bypass tend to be more immediate due to the change in the anatomy of the stomach, whereas with the ESG, the benefits are seen more steadily over time as you lose weight.
What is an ESG
The ESG is an exciting development in obesity treatment, offering a safe and effective alternative to the established surgical weight loss options. As it does not involve surgery, its main attraction is is the lower risk profile and faster recovery time.
The technique we use for ESG was developed by Mr Jamie Kelly, Bariatric Surgeon. Mr Kelly is a world leader in ESG and has advised both nationally and internationally on procedural guidelines and is well published in the literature. He performed the first ESG procedure in the UK in 2014 and now teaches the procedure throughout the UK and Europe. Mr Kelly has developed an ESG technique combining longitudinal compression sutures with the more traditional suture pattern. This technique has been shown to deliver better weight loss outcomes with very low complication rates.
UK’s most comprehensive aftercare package
ESG Procedure
Endoscopic, non-surgical procedure using a device called an Overstitch.
- 60 - 90 minute procedure
- 1 night hospital stay
- 90 day return to theatre cover
Dedicated Support
Our range of nutritionists, Health Coaches and support team are here to help every step of the way
- 2 year comprehensive aftercare
- 24/7 Live App Support
- Group Health Coach sessions
- Lifelong support and advice
- Private Facebook support group
Weight Loss Tools
Videos and live classes on diet, fitness, retraining behaviours, composition scales and activity tracker.
- WI-FI Scales
- Personalised App
- Healthier Weight Starter Kit
- Food diary and trackers
- BariOne vitamin sample
How does the ESG work?
The ESG works in two ways:
- Restriction – The capacity of the stomach is reduced so you feel fuller quicker, and
- It slows gastric emptying. This means the food you eat stays in the stomach a little longer.
The ESG produces a narrower, shorter stomach and leaves a small pouch at the top of the stomach. No stomach is removed and the nerve supply remains. The food enters the pouch causing distention. This distention causes the stretch receptor nerves to fire impulses to the brain making patients feel full. The stretch receptors also fire impulses to the bottom of the stomach to delay its emptying. The patient uses the feeling of fullness to portion control and the delayed emptying mean patients feel fuller for longer. The procedure enhances the body’s normal physiology without the need to remove any of the stomach. Therefore we do not see the nutritional deficiencies or gastroesophageal reflux seen with other weight loss procedures.
Meet Helena,
A Patient Care Coordinator at Healthier Weight
My role is to support you with starting your weight-loss journey with Healthier Weight. During our conversation, we will explore the choices available to you and address any questions and concerns you may have. When you feel ready to move forward, we will arrange a free, no obligation consultation with one of our surgeons.
Weight loss with the ESG
The weight loss results with ESG are excellent. Initially we were seeing an excess weight loss between 50-60% after 1 year, and weight loss can continue until 16-18 months. The Longitudinal Compression technique used is now delivering over 50% excess loss in the first 6 months which is comparable to surgical sleeve and gastric bypass.
We always stress to patients that we need to wait to see long term results, 5 years plus, to be satisfied with the long-term benefits of the procedure but the fact we are seeing over 50% at 6 months and generally 60% at 2 years is very positive. Follow up data is now available demonstrating its durability from 3,4 and 5 years.
As with all weight loss procedures, there is a small proportion (about 10-20%) for whom the procedure is unsuccessful and for whom it is best to consider a surgical procedure.
More about weight loss with the ESG
The evidence we have suggests people can expect to lose about 15-18% of their starting weight (generally half of their excess weight) over a 12-18 month period*.
The weight loss results in the chart below are the published results from a study of 248 ESG patients. They show average total body weight loss (TBWL) as a percentage of the starting weight. Also, we’ve shown how much weight this equates to assuming different starting weights.
In summary, based on the published data you can expect to lose just over half of your excess weight after 24 months. The latest ESG results demonstrate this procedure will deliver close to 80% of the excess weight loss that a surgical sleeve will deliver but you get to keep your stomach and will not develop reflux or nutritional deficiencies.
| Weight loss | |||
| % of starting weight | Start weight 16st | Start weight 20st | |
| At 6 months | 15.2%* | 34lbs | 43lbs |
| At 18 months | 18.6%* | 42lbs | 52lbs |
Based on a group of 248 patients with a mean starting BMI of 37.8
Here is a summary of published weight loss data:
| Participants | Avg weight loss at 2 years | |
| Alqahtani et al | 1600 | 15-20% |
| Lopez-Nava et al | 248 | 18.6% |
| Sharaiha et al | 91 | 20.9% |
In the Lopez Nava study we saw that nearly all of the weight loss was achieved in the first 6 months
ESG Success Stories
Ceri’s Transmission
Lost 3.5 Stone
“I felt really looked after, so I’m really pleased I went with Healthier Weight”
Healthier Weight Starter Kit
Measuring Tape
Water Bottle
Mindfulness Journal
Meal Timer
Restaurant card
-
Flexible Terms
Humm offers interest-free, flexible payment plans to help you split the cost of your purchase into smaller instalments. -
Competitive Rates
Borrow at a highly competitive rate of 17.99% over a period up to 5 years -
Quick & Easy
Immediate decision in principle within 2-3 minutes -
Customer Service
Humm is a truly responsible lender with customers at the heart. If you would like to talk to us in person about your finance options please call us on 0800 3134618
Common FAQs
What is the ESG?
Here is a rather detailed description of the ESG procedure. Please call if you have any questions about it.
The ESG is an endoluminal procedure that is performed under general anaesthesia. It reduces the gastric lumen (stomach capacity) using a series of stitch plications along the length of the stomach from the incisura up to and including a portion of the fundus. The procedure involves placement of full thickness stitches through the stomach wall using the Overstitch.
The suture is carried across from the posterior wall back to the anterior wall and the stitch pattern is repeated, gathered, then ‘cinched’ (stitched). Stitches on the anterior and posterior gastric walls are commonly placed at approximately mid-wall and 6-8 plications in total are usually made. The stitching approach may vary slightly from surgeon to surgeon. Your operating surgeon can provide more detail on this at your consultation.
Where can I have the ESG?
We offer the ESG at Southampton and King Edward VII, London, with Mr Kelly. We were the first centre in the UK to offer this procedure. In time, we expect the procedure to be rolled out to other Healthier Weight centres. Mr Kelly is happy to offer consultations over the telephone or by Zoom but patients would have to travel to Southampton or London for pre-operative assessment and for their procedure.
How long has the procedure been available?
The procedure was developed in the United States and trials have been conducted in the UK, US, South America and Europe. The procedure was launched in the UK in 2014 by Mr Kelly.
How much weight will I lose?
It’s impossible to predict accurately because weight loss results vary by patients. The studies we have available show patients, on average, achieving about 50-60% excess weight loss. Of course, there are some patients who lose nearly all of their excess and others who lose little. This is true of all the weight loss procedures. For optimal results you will need to make changes to your diet and eating behaviours, and the procedure will support you to make these changes. We would say exactly the same to patients having a gastric band, sleeve or bypass procedure.
How much does it cost and can I get finance?
We’ve partnered with Humm Finance, to enable our patients to spread the cost of their procedure with manageable monthly payments.*
The application process is simple and patients have access to a varied, competitive panel of secured and unsecured lending options offering competitive APRs.
Who is the surgeon?
The surgeon is Mr Jamie Kelly. Mr Kelly is a consultant surgeon at Southampton NHS Trust and has his NHS practice at Southampton University Hospital. He is a very experienced bariatric (weight loss) surgeon. He does his private ESG procedures at the local Spire Hospital. Mr Kelly was selected to be the first surgeon for ESG in the UK because of his skill and experience with invasive endoscopic surgery, a field in which he specialises.
Should I have a surgical sleeve, an ESG or something else?
What is right for you will depend on your medical history and personal goals. We will be pleased to talk you through the pros and cons of each procedure in order that you can decide on the option that is best for you. Also, when you come in for consultation we can answer your questions and make sure you are clear on the route that is best for your personally.
What are the complications?
All Weight loss procedures carry an element of risk and ESG is no exception but in the literature is potentially the safest. Early complications of ESG include haemorrhage, anaesthetic reaction, pneumoperitoneum, damage to surrounding organs, fever, peritonitis and abdominal pain. Beyond 4 days they include pneumoperitoneum and pulmonary embolus/deep vein thrombophlebitis and ‘later’ complications might include pulmonary embolus and intra-abdominal abscesses. It’s important to remember that all hospital procedures carry an element of unpredictability, also that over time the complications associated with a procedure, may change.
All content on this page is reviewed by a multi-disciplinary team led by Mr Jamie Kelly.
Rated Excellent from over 1250 patient reviews. View all reviews
Healthier Weight are so supportive
From when I first rang healthier weight I was fully supported by the team. Helena was lovely she gave me all the information I needed to make the decision. Sam and Angela was fully supportive about the pre-op...
5 stars to Healthier Weight
I had bariatric surgery 5 weeks ago. I can honestly say that I could not have gone through with this procedure without Healthier Weight. They organised everything for me. From the initial consultation with the surgeon...
Fantastic support
From start to finish I have had a fantastic experience with Healthier Weight. From the Consultant and nursing staff on the ward to the nurses who provided aftercare...
Complete the form below to receive your free personalised quote with details of our finance options.