Gastric Bypass Surgery

At Spire Thames Valley Hospital near Gerrards Cross and Windsor in Buckinghamshire, we offer the full range of weight loss procedures. The Gastric Bypass procedure is one of those performed by our specialist Bariatric Consultant, Mr Samer Humadi.

What is gastric bypass surgery?

Gastric bypass surgery (most commonly the Roux-en-Y gastric bypass) is a procedure which aims to reduce the amount of calories absorbed from your food whilst helping you to feel full after eating smaller meals.

This weight loss procedure works in two ways:

  • By restricting the capacity of your stomach, and by
  • Bypassing part of your digestive system

Why do people choose to have gastric bypass surgery?

Gastric bypass surgery can help people with obesity lose a substantial amount of weight, after other methods like diet and exercise have failed. Obesity is associated with multitude of health problems and losing weight can also help to reduce them.

Gastric bypass surgery may be appropriate for you if: 

  • You are morbidly obese (have a BMI of over 40)
  • You have a BMI of over 35 and suffer from a condition that poses a serious health risk (e.g. diabetes, heart disease or high blood pressure)
  • all appropriate non-surgical measures have been tried but have failed to achieve or maintain adequate, clinically beneficial weight loss
  • You are generally fit for anaesthesia and surgery and commit to the need for long-term follow-up.

Weight Loss Gastric Bypass surgery from Spire Healthcare

Benefits of gastric bypass

The main benefit of gastric bypass surgery is its ability to help patients lose a significant amount of weight. Each patient is unique; however there are a number of positive effects of losing weight which are commonly experienced:

  • Reduction in the health risks associated with obesity
  • Improved health and mobility
  • Improved mental wellbeing
  • Boost to self esteem and self confidence

What happens during gastric bypass surgery?

Firstly, a small compartment is created at the top of your stomach using staples. A piece of your intestine is then joined to this compartment, which bypasses the rest of your stomach and the upper part of the intestine, where most nutrients and calories are usually absorbed.

The small top part of your stomach fills up quickly with food, giving you a sensation of fullness, and then passes directly to the middle part of your small intestine and through the rest of your digestive system. As the digestive system has effectively been made shorter you should absorb fewer calories.

Is gastric bypass surgery available on the NHS?

NHS funding for this procedure is limited and varies by area. For this reason, many people find that getting a private gastric bypass operation is the best option.

Gastric bypass surgery aftercare

You will normally need to stay in hospital for about three days after the procedure so we can look after you and make sure we are happy with everything before you go home. Our team of dieticians and specialist nurses will look after you throughout your stay and provide support and advice after surgery.

Gastric bypass surgery from Spire Healthcare

With Spire Healthcare you will be treated by an experience bariatric (obesity) surgeon at a time that suits you. You will be treated in a premium private hospital, not a clinic, and you can be assured of our commitment to healthcare standards and infection control excellence. What’s more, you’ll be able to recuperate in your own private room with friends and family able to visit when you wish.


Weight Loss Surgery - Gastric Bypass

Pricing detail £10,950.00

After the surgery

Spire Thames Valley Hospital offers you fixed price packages so you can choose, with advice from the surgeon, the length of aftercare required. 

Once the Bypass has been performed, you will be provided with regular follow-ups by the specialist team to ensure you get the advice and support you need. They will help you make the changes to your diet and lifestyle that are necessary for you to achieve your weight loss goals. 

How much can I expect to lose?

Sustained long term weight loss success is related directly to a patient’s motivation and their commitment to following the dietary guidelines provided. However, a patient can expect to lose 60-70% of their excess weight within the first 18 months after the gastric bypass has been performed.

See the “Frequently Asked Questions” section for further details of the gastric bypass.

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Our consultant weight loss surgeon Mr Humadi

Mr Humadi offers his patients the full spectrum of bariatric procedures including insertion of gastric balloons, gastric banding, sleeve gastrectomy and gastric bypass.

Read more about Mr Humadi

© Spire Healthcare Group plc (2016)