Gastric Bypass


Surgical Procedure

From £9,695

Request A Free Consultation

Gastric Bypass


Surgical Procedure

From £9,695

Request A Free Consultation



If you feel you have exhausted all the traditional options for losing weight, and this is now affecting your quality of life, having an impact on your confidence, relationships, health and happiness, you could consider the Gastric Bypass. This is a life changing procedure that will enable you to transform your life.

The Gastric Bypass (RYGBP) is a long established weight loss procedure and has been proven in numerous studies to result in durable weight loss. The mechanism in which the RYGBP is complex, following surgery patients often experience marked changes in their behaviour.

Patients often state that not only do they have reduced hunger, they also enjoy healthier foods and lose many of their improper food cravings. Patients rarely feel deprived of food with this procedure. These behavioural changes are partly due to alterations in several hormones and neural signals that communicate with the hunger centres in the brain.

The Gastric Bypass is also known for the beneficial effects of treating metabolic diseases. Guidelines now suggest that this procedure should be considered as a first line treatment if your BMI is over 30kg/m and you have recently been diagnosed with Type 2 diabetes. However, these are guidelines and patients are assessed on an individual basis.

Advantages of the Gastric Bypass

Quick and Dramatic Weight Loss (60-70%)

Improvement with Weight Related Health Issues

Improved Mobility and Quality of Life


The Gastric Bypass (RYGBP) is a restrictive (portion control) with a partial element of malabsorption surgical procedure. The surgery is usually performed laparoscopically (key hole surgery) under a general anaesthetic.

  • Key hole surgery is small incisions on the torso (under the chest but above the tummy button). The scope and instruments needed to perform the surgery are inserted through the small incision sites.
  • A camera is connected to a video monitor in the operating theatre and allows the surgeon to view inside the abdomen during the operation.

Gastric Bypass Surgery has 2 segments to the procedure.

  • First, a small pouch is created by dividing the top part of the stomach that is approximately 30 millilitres in volume.
  • Next, the small intestine is divided and the bottom part is connected to the new small pouch.
  • The surgery is then completed by connecting the top part of the separated intestine to the small intestine allowing nutrients and calories to bypass part to the intestine resulting in less fat absorption therefore patients lose weight.

Gastric Bypass FAQs

Q: What do i need to be aware of following gastric bypass surgery?

A: Patients are advised following this procedure that they will require regular blood tests at 3, 6 possibly 9 and 12 months ongoing. You may also need vitamin B12 injections (depending on the blood test results) It is also very important that you take multivitamin and mineral supplements following this procedure and for life.

Q: Can I drink alcohol and smoke after gastric bypass surgery?

A: Patients are advised to stop smoking prior to surgery and should also be aware that there are complications that can arise associated with smoking after surgery. Smokers are at a much higher risk of gastric pouch ulcers which can cause significant pain in the upper abdomen.

With regards to alcohol, patients are advised to avoid drinking alcohol for at least six months after surgery, there are several reasons for this. Alcohol could irritate the stomach as it is healing. You will become intoxicated a lot faster and the calories in alcohol with interfere with weight loss. You may also develop dumping syndrome which is marked by the rapid emptying of the stomach. The moral of the story is alcohol in moderation.

Q: What is dumping syndrome?

A: Dumping syndrome (rapid gastric emptying) normally occurs when alcohol or food, especially sugar moves from your stomach to your small bowel too quickly.

Symptoms of dumping syndrome generally occur right after eating especially if you have eating something rich in sucrose or fructose. Patients can experience a feeling of light-headedness, nausea, with raised temperature and rapid heart rate. Late dumping can also be experience which occurs one to three hours after sugar consumption. This is due to your body releasing large amounts of insulin to absorb the sugars entering your small intestine. The result is low blood sugar.

You can help to prevent dumping syndrome by dietary changes to reduce the intake of high sugar foods.

Q: How long will I be in hospital and what is the recovery time?

A: If the Gastric Bypass surgery is performed laparoscopically (keyhole surgery) it is a 1-2 night stay in hospital. Most patients report they feel comfortable returning to work in about 1-2 weeks.

Q: What are the advantages for gastric bypass surgery?

A: Better weight loss than with a purely restrictive procedure. Produces significant long-term weight loss (60 to 80 percent excess weight loss)

Rapid improvement or resolution of weight related co morbidities

Produces favourable changes in gut hormones that reduce appetite and enhance satiety restricting the amount of food consumed and the absorption of calories.

Q: What are the disadvantages of gastric bypass?

A: It is a more complex procedure than the Gastric Band, Gastric Sleeve or Mini Bypass so slightly higher complication rates

Could lead to long-term vitamin/mineral deficiencies including vitamin B12, iron, calcium, and folate

Requires adherence to dietary recommendations, patient compliance and life-long vitamin/mineral supplements.