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Gastric Bypass

We invite you to meet our highly trained weight loss surgeons because we believe the best results are achieved through thorough consultations and complete understanding of the treatment.

If you have questions, or simply would like to discuss your options. Please feel free to call us on +442070303455 or email your questions to


>    What is the gastric bypass?
>    How much does the gastric bypass cost?
>    Who are the best candidates for the gastric bypass?
>    How does the gastric bypass work?
>    How is the gastric bypass surgery carried out?
>    What is the recovery after the gastric bypass?
>    What are the benefits and risks of the gastric bypass?
>    How will life change after the gastric bypass?
>    What is the recommended diet for a gastric bypass?
>    Why choose Harley Street Bariatrics?

The Gastric Bypass Weight Loss Surgery


What is the gastric bypass? Back to top

Gastric Bypass

The gastric bypass surgery is a weight loss surgery, also know as a bariatric surgery.

The three main types of gastric bypasses are:

  1. Gastric bypass, Roux en-Y (Proximal)
  2. Gastric bypass, Roux en-Y (Distal)
  3. Mini-gastric bypass (MGB)


All bypasses involve the creation of a small stomach pouch to restrict food intake, the stomach and the small intestine are then bypassed which reduces the absorption of calories and nutrients from food. The combined restriction of meals sizes and food absorption support the most effective weight loss results. Gastric bypass patient have the potential of losing up to 80% of their excess body weight. It is one of the more complex weight loss surgeries but also one of the most effective. The gastric bypass is non-reversible.


How much does the gastric bypass cost? Back to top

Exact costs are given after your first consultation with the surgeon. The starting cost of the gastric bypass is £13,000 all inclusive for a surgeon lead care. This means that you have constant and unlimited access to your surgeon.


Who are the best candidates for the gastric bypass? Back to top

This specific type of weight loss surgery is aimed for patients with a BMI above 40.  Patients with a lower BMI between 30 and 40, will be considered, if they have a related co-morbidities (or related obesity illness) including  Type 2 Diabetes, heart disease, hypertension and sleep apnea.
* You can calculate your BMI on our main page *( please click here )

Other important factors:

  •     You have been overweight for over five years.
  •     Your weight-loss attempts have had only short term success, for example “yo yo” dieting
  •     You are not suffering from any other disease that may have caused your weight gain.
  •     You are prepared to make a daily commitment and change in your eating habits and lifestyle.
  •     You are willing and eager to being monitored by the specialist treating you.
  •     You do not drink alcohol in excess.
  •     You do not smoke.
  •     You do not take drugs.

At the time of your consultation, you will be carefully assessed by the surgeon as each individual is different in anatomy and BMI are rough estimates not taking into account large bone and muscle mass.


How does the gastric bypass work? Back to top

The stomach is reduced by 75% to create a feeling of fullness on much smaller food portions. If patient over eat, they will experience feelings of discomfort which may lead to vomiting. With time, patients learn to cope with their new anatomy by changing their eating habits.


How is the gastric bypass surgery carried out? Back to top

The gastric bypass is carried out under a general anesthetic through key hole surgery also know as laparoscopy surgery. The surgery itself takes between 2 – 4 hours.
What is the recovery after the gastric bypass? Back to top
Patients generally stay 2 nights in the hospital before being discharged by the surgeon. The average recovery rate is between 6 to 8 weeks. Patients with non-strenuous jobs may return to work after 2 weeks.


What are the benefits and risks of the gastric bypass? Back to top

The main benefits are:

  • Most type II diabeties will be cured
  • Improvements in other obese  associated conditions such as sleep apnoea, asthma, joint pain, arthritis and fatigue
  • Reduces the risk of heart disease and cancer
  • 70-80% of patients suffering with hypertension will no longer need to take medication
  •  The life expectancy rate of gastric bypass patients has been shown to be increased by up to 40%
  • Potential of loosing up to 80% of overall extra body weight

The main risks are:

All surgeries carry risks. The experience and skill of the surgeon plus careful screening of each prospect can significantly lower these risks.

    • Infection – antibiotics are usually given to prevent infection.
    • Damage to other organs in your abdomen – you may need further surgery to repair any damage.
    • Dumping Syndrome – when undigested food enters the small intestine too quickly.
    • Nutritional Deficiencies
    • Hernia
    • Bleeding


How will life change after the gastric bypass? Back to top

The gastric bypass has the potential of helping patients loose most of their extra body weight, but it should not be seen as a single tool in the fight against obesity.

Prior to this particular bariatric surgery, patients will need to commit to a rigorous and lifelong plan in their diet and lifestyle to ensure they do not put the weight back or suffer potential complications.

The main commitments are:

  1.  A Controlled Diet
  2. Regular Exercise
  3. Nutritional Supplements

On a psychological level, the rapid weight loss may cause relationship problems with family and friends who are still struggling with their weight.

After most of the extra weight has been lost, patients are then left with unsightly loose folds of skin which may need to be corrected with further surgery. A high percentage of post bariatric surgery patients are candidates for cosmetic surgery know as body contouring.

The body contouring procedures include:

  1. Tummy Tuck
  2. Arm Lift
  3. Thigh Lift
  4. Neck Lift

Last but not least, many patients with mental health issues, including depression and anxiety, will find these issues will not automatically be improved with the lost of weight and should potentially consider seeing a psychologist at the time of the surgery for support.

It is important to have realistic expectations about what life after weight loss surgery will be like. It is recommended to have a good support group of family or friend who can help with the transition into the new life after the gastric bypass.


What is the recommended diet for a gastric bypass? Back to top

Diet plans post gastric bypass surgery may change from patient to patient due to individual needs and recovery rates. Generally, the gastric bypass diet is partitioned into 4 stages to support the transition of the patient going back to a solid diet.How quickly one moves from stage 1 to stage 4 depends on the recovery period and the patient’s adjustment to new eating patterns.

The 4 diet stages are:

  1. Liquid Foods: broth, unsweetened fruit juices, strained soups, etc…
  2. Pureed Foods: yogurt, smoothies, cottage cheese, mash, etc…
  3. Soft, solid Foods: cooked vegetables, ground meats, etc…
  4. Solid Foods: this is generally a trial and error stage, where patient can test which food they tolerate the most.

Patient can usually start eating normal food three months post surgery.  Some patients may experiences some food intolerance.

Foods that should be avoided after the gastric bypass are:

  1. Spicy food
  2. Carbonated drinks, sodas
  3. Bread
  4. Stringy vegetables
  5. Grilled meats or tough meats


Why choose Harley Street Bariatrics? Back to top

  • We offer surgeon/consultant led care, meaning you have unlimited access to your surgeon either it be face to face, via email and/or mobile. Our caring weight loss surgeons aim to not only offer their expertise in surgery but also a supporting environment for each patients to reach their potential. They believe weight loss surgery is only a tool and that weight loss is a journey that requires constant support.
  • We perform all of our weight loss treatments, both surgical and non surgical, in specialized private hospitals in London, UK. Meaning, the hospitals and staff are experienced in supporting our weight loss surgeons by offering local and easily accessible medical care.
  • We have hand-picked experienced bariatric surgeons.  Performing both NHS and private operations, our weight loss surgeons have extensive experience and expertise in performing all types of bariatric treatments, including the gastric bypass and the gastric sleeve weight loss surgeries. Their passion in bariatrics is demonstrated through their yearly research, development, peer reviewed publications and attendance of prestigious national and international conferences.
  • We use the highest quality medical products, meaning all of our bariatric surgeons use Allergan®, the world’s leading supplier for the LAP-BAND® Adjustable Gastric Banding System and the BioEnterics® Intragastric Balloon also known as the BIB®.
  • We use the latest models of the SPATZ adjustable gastric balloon, SPATZ 3®.
  • We provide post-operative care for overseas patients who had surgery elsewhere either is be gastric band infills or a gastric balloon removal. Our experienced surgeon aim to care for all patients with the same level of care and support to reach their weight loss.

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Meet the Specialists

We have hand picked a team of international world renowned surgeons, dietitians, nutritionists, fitness trainers, psychotherapist and other weight loss specialists to create new, tailored and innovative weight loss programs: