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Gastric Sleeve | Healthier Weight

Gastric sleeve

Gastric sleeve surgery

NEW Non-surgical sleeve

Same weight loss benefits without surgery or scars 

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What is a gastric sleeve?

Gastric sleeve diagram

A popular alternative to gastric bypass as a simpler, quicker procedure the gastric sleeve (sleeve gastrectomy) was originally developed as the first of a two-stage surgical procedure when the anaesthetic risk of a gastric bypass was too high.

Many patients did so well with just the sleeve that no further surgery was required. The 2 hour gastric sleeve operation is performed using laparoscopic (keyhole) surgery and involves converting the stomach into a long, thin tube (shaped rather like a banana) by stapling it along its length.

How a gastric sleeve works

The gastric sleeve works to produce weight loss in two ways. Firstly by restriction as a large portion of the stomach is removed during surgery leaving a 'stomach sleeve' about 20% of the original volume. This means you can only eat a very small amount of food before feeling full.

Secondly by an impact on hormones. Levels of the appetite stimulant ghrelin fall after gastric sleeve surgery, which may explain why patients experience such a marked loss of appetite. Sleeve patients also see profound changes in taste and food preferences away from fatty, sugary foods and this change in eating habits may further contribute to weight loss*.

For more information, you may wish to visit the Gastric Sleeve FAQ's

Is gastric sleeve surgery right for you?

In 2014 NICE updated its advice on weight loss surgery on the NHS, particularly for patients with Type II diabetes. It's a fact however, that only 1% of those who would benefit from a weight loss procedure in the UK actually have one, and gastric sleeve procedures are rarely undertaken on the NHS.

We'll assess your eligibility for private gastric sleeve surgery at consultation but as a general guide; you may be eligible if your BMI is 35kg/m2 or over, you've tried and failed with diets, and know you need a more long term solution.

We have also recently started offering the new endoscopic sleeve gastroplasty procedure. This is a non-surgical alternative to the regular gastric sleeve, and as such is less invasive, but with similar results.

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*Weight loss surgery results and benefits differ for each individual. Results cannot be guaranteed
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2 year aftercare package, including 30 day surgical warranty

Aftercare nurse

Careful long-term follow-up is essential to achieve your weight-loss goals and avoid nutritional and metabolic complications. At Healthier Weight we have a comprehensive gastric sleeve aftercare programme, including:     

  • Support from bariatric nursing team in immediate post-operative period and 'open door' policy at all other times

  • Post-operative clinical review with bariatric nurse at 2 weeks  

  • Clinical review with comprehensive blood tests at 6 months 

  • Further clinical reviews at 3, 12, 18 and 24 months

  • 30 Day Surgical Warranty to cover the cost of further surgery if you suffer a complication

  • Emergency Helpline

  • Dietary guide with all you need to know about eating after gastric sleeve surgery     

  • Nutritional support to implement habits conducive to long-term weight loss   

Finance plans
Spread the cost of your procedure over 5 years
with our Flexible Finance Options

Gastric sleeve success stories

Gastric sleeve success story - Carol after surgery

"I feel incredibly sad when I think of how I was.  If I hadn’t come to Healthier Weight I would be 28 stones."

Carol now has renewed confidence and self esteem since losing 10 stones with a gastric sleeve*.

Gastric sleeve story - Donna's after photo

"I've gone from a size 24 to a size 12. It has changed not only my appearance, but, my whole outlook on life"

Donna has lost nearly 8 stone since having gastric sleeve surgery in 2010, and has maintained that loss since*.

Woman on scales small

Weight loss results and procedure outcomes comparable

with the best centres of excellence around the world*

Weight loss with a gastric sleeve

Typically, we expect gastric sleeve patients to lose 50-70% of their excess weight over a 2-year period, although the majority of this weight is lost in the first year. Weight loss results for each sleeve patient are however different and your results will depend on how well you adapt your lifestyle and eating habits. A gastric sleeve is extremely effective if you follow our guidelines, but it is important to remember that it is not a “cure” for your weight problems, rather a powerful tool to help you manage your weight*.

An example of expected weight loss:

  • A 5ft 6in person weighing 17st (240lbs / 109kgs) has an ideal weight of about 11st (154lbs / 70kgs)
  • They are carrying excess weight therefore of 240lbs minus 154lbs = 86lbs.
  • 70% of 86lbs is around 60lbs
  • So this person could expect to lose (on average) up to 60lbs (27kgs) which is between 4 and 4½ stones in weight*

It is possible to regain weight after an initially successful period of weight loss and this tends to happen if patients return to old eating habits. A small percentage of patients won't achieve good results with a sleeve but this is usually due to an inability to adapt to a healthier diet and lifestyle. You will find more information on eating and drinking on our gastric sleeve FAQ page.

Excess or loose skin following weight loss

Due to the considerable amount of weight that gastric sleeve patients typically lose, it's possible that you will experience some excess, loose or saggy skin. This most commonly occurs in the abdominal apron, or trunk area. The amount of excess skin you'll be left with following a gastric sleeve operation varies and will depend upon your age and weight before the procedure. Generally, the heavier and older you are, the more likely you are to have excess skin. Younger patients tend not to have as much lax skin due to greater natural skin elasticity.
Finance plans
Spread the cost of your procedure over 5 years

with our Flexible Finance Options

Benefits and risks of the gastric sleeve

Health benefits

In addition to weight loss*, gastric sleeve patients can experience a wide range of health benefits following their surgery, some of which are listed below:

  • Type II diabetes: 80% of patients will have complete resolution of their diabetes

  • Hypertension: 85-90% of patients reduce or stop their anti-hypertensive (blood pressure) medication

  • Dyslipidaemia: 90-95% of patients show major improvement or complete resolution of abnormal cholesterol

  • Sleep apnoea: 80-85% of patients discontinue CPAP†. Improved sleeping patterns, snoring and daytime fatigue    

  • Stress incontinence: The majority of patients experience marked improvement or complete resolution of symptoms    

  • Infertility and PCOS*: 95% of patients experience correction of underlying hormonal problems and restored fertility    

  • Asthma: Patients with asthma see marked improvement in symptoms and a reduction in medication     

  • Liver disease (NASH)¶: 85-90% of patients will have complete resolution of the disease   

  • Back pain and arthritis: Patients experience marked reduction in joint and back pain and increased mobility   

  • Psychological wellbeing: Reduced depressive symptoms and anxiety, improved social interaction and overall quality of life    

† Continuous Positive Airways Pressure     * Polycystic ovarian syndrome     ¶ Non-Alcoholic Steatohepatitis


As with any surgery, there are operative and long-term complications and risks associated with gastric sleeve obesity surgery but in experienced hands, the procedure is very safe and the risks associated with the surgery are relatively small. The operation itself is technically very simple as it does not involve any cutting or joining of the bowel, unlike some other weight loss procedures such as the gastric bypass, and this is reflected in its low rate of early complications of 3 - 5% (3:100 to 5:100) and in the low mortality rate of 0.1 - 0.5% (1 in 1000 to 5 in 1000). For more information on how these two operations compare, please visit gastric sleeve v gastric bypass.

Gastric sleeve risks include:

  • Haemmorrhage (bleeding)

  • Leaks from staple lines leading to infection

  • Adverse reactions to anesthesia and/or medication

  • Blood clots (Deep vein thrombosis in the legs / Pulmonary embolus on the lungs)

  • Marginal ulcer

  • Death

It is also important to note that although gastric sleeve surgery does not result in reduced calorie absorption, it can result in reduced absorption of key micronutrients (vitamins and minerals), particularly iron, vitamin B12, Vitamin A, Vitamin D and calcium. Deficiencies in these nutrients can lead to serious problems such as anaemia, fatigue, osteoporosis and neurological problems. Patients are required to take intensive vitamin and mineral supplementation for life.

Call our specialist team today on 0121 693 4488 or Make an enquiry

For prices and finance options, complete a fast quote or call 0800 313 4618

*Weight loss surgery results and benefits differ for each individual. Results cannot be guaranteed

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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.