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Non-Surgical 'Sleeve' - Endoscopic Sleeve Gastroplasty (ESG)

Non-Surgical Sleeve - Endoscopic Sleeve Gastroplasty

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"The next day after my ESG I was able to do everything I normally do!" 

- ‘G’ ESG patient from January 2017

At Healthier Weight we are the first UK clinic to offer the traditional surgical sleeve and a new non-surgical alternative, the endoscopic sleeve gastroplasty (ESG - number 2 in the image above).

The ESG is an exciting development in obesity treatment that offers eligible patients a safe and effective alternative to the surgical weight loss options. It offers many of the benefits of the surgical sleeve but with lower risk. An ever-growing number of patients are transforming their health and quality of life by choosing an ESG.

This page is designed to tell you all you need to know about the ESG and the surgical sleeve. We recommend you explore both options before deciding. You can find everything you need to know about the surgical gastric sleeve at our ‘Gastric Sleeve Centre’ here. As soon as you are ready please call us to ask your own personal questions and to arrange your free surgeon consultation. This is the best way to get the 1:1 attention needed to help you decide. Please call on 0333 254 3998 or use our enquiry form here.

Find out if you are eligible for ESG


What is an endoscopic sleeve gastroplasty?

The endoscopic sleeve gastroplasty (ESG) is a new procedure for those who want the benefits of weight loss surgery but from a less invasive, non-surgical procedure. It involves suturing the stomach from the inside to significantly reduce its capacity by up to 80%. After the procedure, the stomach remains intact but has been sutured from top to bottom to leave a smaller banana shaped stomach through which the food you eat passes.

It's a less invasive procedure that offers a faster recovery time with less risk of an extended hospital stay.

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. The procedure is carried out by pioneering surgeon  Mr Jamie Kelly, in Southampton, under general anaesthetic and usually takes about an hour. 

It works by reducing stomach capacity and slowing down the speed at which food passes into the bowel. The food you eat goes into a small pocket at the top of the stomach before working its way down through the reduced, banana shaped stomach, and emptying into the bowel.

We’ve been very encouraged by the weight loss results our ESG patients are achieving. The studies show excess weight loss* after 2 years in the region of 50-60%, and ours at the top end of this range. In fact, a large proportion of patients have done considerably better, some reaching their target weight within 12 months*. Read more about our results with ESG here.

Read our frequently asked questions on the ESG  

Mr Kelly has been doing ESGs for longer than any other UK surgeon. In addition to his substantial private weight loss surgery practice, Mr Kelly is Service Lead for Bariatrics at Southampton University Hospital Trust. He is one of the most prolific and respected weight loss surgeons operating in the UK and does all of the major procedures available in the UK today, including gastric band, gastric sleeve, gastric bypass and ESG. Such is the demand for consultations with Mr Kelly that he offers telephone consultations in addition to his regular consultation clinics. An initial telephone consultation is often more convenient for remote patients too. Please complete the form on this page or call 0800 313 4618 to arrange consultation with Mr Kelly.

Jamie Kelly, ESG Surgeon, Healthier Weight

Who should choose an ESG?

An ESG is a good option if you :

  • Don’t want the maintenance commitment of a gastric band, e.g. band fills
  • Don’t want the risks and recovery time associated with a surgical procedure
  • Don’t want a procedure that leaves visible scarring
  • Want a non surgical procedure that gives better long term results than a   gastric balloon

ESG Price and Finance Plans

The price for the ESG is £9,999. Prices may vary a little depending on location and medical history but this is unusual. The price is very similar to that for the surgical sleeve. This reflects the fact that hospital, surgeon and anaesthetist costs are the same.

There are two finance plans available to help you fund your procedure**. There is a plan that enables you to borrow most of the price and repay over a period of up to 4 years, and a short-term plan that enables you to borrow a smaller amount and repay over 12 months. The longer-term plan is interest bearing at a representative APR of 14.9%. The short-term plan however is completely free of interest and fees. Please call our team on 0800 313 4618 to discuss the ESG, prices and finance options.’ 

ESG Success Story

We were contacted at the end of 2016 by a lady from Oxford who had battled her weight for many years. Her BMI was 34.1 and she weighed 14 stone. She was well researched and was interested in the ESG instead of a gastric band. She had her surgery in early 2017 and has enjoyed tremendous success. She has lost over 40 pounds and her BMI had reduced to 26.9. She is at a weight she is happy with and has dropped 3 dress sizes. The ESG was the perfect procedure for her. Read more about her success here.

Am I eligible for an endoscopic sleeve gastroplasty?

Your consultant will explain all of the options available to you at your 1:1 consultation. As a guide, you will be eligible for ESG if:

  • Your body mass index is in the range 32-45 kg/m2 – check BMI
  • You’ve tried and failed to lose weight through diet and lifestyle changes
  • Your weight is having an impact on your health and/or your day to day life

Important: If you are living with weight related co-morbidities, such as type 2 diabetes, the surgical weight loss procedures are likely to be more beneficial for you.

These notes are for guidance only and your consultant will make an assessment based on the full picture presented at consultation.

What results can I expect? 

It isn't possible to predict how much weight you will lose following an ESG as results vary according to many factors including your willingness to adapt your diet and your physical activity.

The evidence we have suggests people can expect to lose about half of their excess weight over a 12-18 month period*. At this stage, because this is still a new procedure, longer term weight loss results are not available.

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.  We’ve also 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 after your procedure. This is similar to the weight loss with a gastric band and a little below the weight loss we’d expect with a surgical sleeve or gastric bypass

  Weight loss (of starting weight) Weight loss assuming start weight of 16 stone   Weight loss assuming start weight of 20 stone 
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
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The UK's most comprehensive ESG package

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What's the difference between a Non-Surgical Gastric 'Sleeve' (ESG) and Gastric Sleeve Surgery?

The surgical sleeve gastrectomy is an excellent procedure and we recommend it to several patients every month. As always, there are pros and cons for each, the table below is designed to help you compare the differences or read more about how the ESG compares with surgical sleeve.


  Endoscopic Sleeve Gastroplasty Gastric Sleeve Surgery
Procedure Type Endoscopic (instruments placed through mouth) Laparoscopic (instruments placed through incisions in abdomen)
Visible scarring  None  Typically 5 abdominal scars 
Remaining stomach function  Stomach left intact 80%+ stomach removed
Expected recovery period  2-3 days  About 2 weeks 
Future options  Revision of ESG, surgical sleeve or gastric bypass Revision to gastric bypass or revision of gastric sleeve
Expected weight loss  Approx. 50-60% excess weight at 2 years 60-70% weight loss at 2 years *
Historical data  New procedure (see below)  More established procedure with long term results
Risk profile  Relatively lower risk Relatively higher risk 

Still unsure which of these operations is going to be best for you? See endoscopic sleeve gastroplasty or surgical gastric sleeve or read our Frequently Asked Questions

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Endoscopic Sleeve Gastroplasty Risks

The ESG is a new procedure. As such, there is uncertainty about long term outcomes but from the information available from the centres who have pioneered it in the United States and in Europe, we consider the technique potentially to be a major advancement in the treatment of obesity. 

The procedure is approved by the appropriate regulatory bodies in the UK and in Europe. Indeed the device used to perform the ESG, the "Overstitch", is in use already within the NHS for revisional surgery procedures. A rigorous training and sign off process is followed by any UK consultant using the device in order to ensure the highest standards at all times.

Any procedure of this type involves an element of risk and these will be explained in full at your consultation. Risks include:

  • Perigastric inflammatory fluid collootion
  • Anaesthetic related risk, e.g. reaction
  • Haemorrhage
  • Perforation of the stomach
  • Pneumoperitoneum and pneumo thorax
  • Laceration of the oesophagus or stomach
  • Mild abdominal pain, nausea and vomiting

Importantly, the major risk associated with the surgical sleeve, that of staple line leakage, does not apply with endoscopic sleeve gastroplasty.
 This is very important and we will explain the risks in detail at your consultation.

Peace of Mind Warranty - At Healthier Weight our all inclusive package also includes a 30 day warranty for additional peace of mind. If, following your endoscopic sleeve gastroplasty procedure, you have an extended stay in hospital or you need to return to theatre within 30 days, we will meet any related hospital and consultant costs.

Aftercare nurse

Endoscopic Sleeve Gastroplasty (ESG) Aftercare and Support

Any weight loss procedure is only as good as the long term commitment of the patient, and the long term support of the clinic. Your procedure package includes a 12 month aftercare period during which our surgeon and clinical team will be in touch at regular intervals. Following this aftercare period, you will continue to have access to telephone and email support, and our patient forum for life.

Surgical Sleeve

The surgical sleeve is a great procedure that is now established across the world as a primary procedure in the treatment of obesity. At Healthier Weight we do many sleeves every month and those patients enjoy excellent results. See Hali’s story here. It tends to be the better procedure for people with a higher starting BMI (over 40) and certainly is for those who are already suffering with weight related health issues. Read more about the surgical sleeve here, at our Gastric Sleeve Centre. This ‘centre’ is designed to give easy access to all the information you would ever need about the gastric sleeve procedure.

**Finance subject to individual status and UK residence. Terms and conditions apply. Healthier Weight is a trading name of Weight to Go Limited (WTG) which is a registered credit broker and not a lender.”

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*Weight loss surgery results and benefits vary and are different for each individual. As such, Healthier Weight cannot guarantee specific weight loss goals.