Partial stomach removal for weight loss

Partial gastrectomy

Part of your stomach is removed during a partial gastrectomy, to make your stomach smaller


A partial stomach removal works by making your stomach smaller so you'll feel full sooner and eat less. If you have a high BMI score (over 40), surgery may help you to lose weight long-term. It may also help if you have a BMI over 35, and have other medical problems such as high blood pressure.

Need to know

  • What happens icon plus

    This operation is carried out under a general anaesthetic which means you'll be asleep during the procedure. It may be carried out as open surgery or minimally invasive keyhole surgery. Your consultant will let you know which option is best for you. Your surgeon will remove the lower half of your stomach and close off the first part of your small intestine, called the duodenum. This is the part of your small intestine that receives partially digested food from your stomach. Your surgeon will then connect the remaining part of your stomach to your bowel.
  • How to prepare icon plus

    Your consultant will check your BMI and carry out a detailed pre-surgery assessment before letting you know if surgery is suitable for you. Like all procedures, there may some risks and side effects involved. Your consultant will explain these to you. As you're having a general anaesthetic, your consultant will let you know how long you should avoid eating and drinking beforehand. They'll let you know if you need to do anything else to prepare and answer any questions you might have.
  • Afterwards icon plus

    You'll need to have a catheter after surgery. You won't be very mobile so it'll allow you to empty your bladder without going to the toilet. You might also have a tube passing through your nose into your stomach or small intestine. Until you can eat normally, you'll get the nutrients you need through a small tube in one of your veins or into your bowel. You'll be given pain relief to help you feel more comfortable. You'll be cared for in hospital for at least two nights. It could take at least two weeks for you to recover. Your consultant will let you know when you can get back to your usual routine. They'll also give you dietary advice.

Don't wait, pay for yourself

We offer this treatment at a fixed price at some of our facilities.

Our consultants

We're proud to work with leading experts across a range of medical fields, whose skills are matched by their integrity and compassion.

Our facilities

From complex surgery to straightforward procedures, we provide exceptional care across our network of hospitals, outpatient centres and specialist clinics.

Request an appointment

Our team can help with any enquiries or you make an appointment with one of our experienced consultants.

Call us today

020 7079 4344
This content is intended for general information only and does not replace the need for personal advice from a qualified health professional.
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