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Weight Loss - Bariatric - Metabolic Surgery

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Weight loss surgery, also called bariatric or metabolic surgery, is sometimes used as a treatment for people who are very obese.

It can lead to significant weight loss and help improve many obesity-related conditions, such as type 2 diabetes or high blood pressure.

But it's a major operation and in most cases should only be considered after trying to lose weight through a healthy diet and exercise.

 

Weight loss surgery is advised if:

  • you have a body mass index (BMI) of 40 or more, or a BMI between 35 and 40 and an obesity-related condition that might improve if you lost weight (such as type 2 diabetes or high blood pressure)

  • you've tried all other weight loss methods, such as dieting and exercise, but have struggled to lose weight or keep it off.

  • you agree to long-term follow-up after surgery – such as making healthy lifestyle changes and attending regular check-ups.

 

Speak to a doctor if you think weight loss surgery may be an option for you.

Types of weight loss surgery

There are several types of weight loss surgery.

The most common types are:

  • gastric band – a band is placed around your stomach, so you do not need to eat as much to feel full

  • gastric bypass – the top part of your stomach is joined to the small intestine, so you feel fuller sooner and do not absorb as many calories from food

  • sleeve gastrectomy – some of your stomach is removed, so you cannot eat as much as you could before and you'll feel full sooner

All these operations can lead to significant weight loss within a few years, but each has advantages and disadvantages.

If you're considering weight loss surgery, speak to a surgeon about the different types available to help decide which is best for you.

Life after weight loss surgery

Weight loss surgery can achieve dramatic weight loss, but it's not a cure for obesity on its own.

You'll need to commit to making permanent lifestyle changes after surgery to avoid putting weight back on.

You'll need to:

  • change your diet – you'll be on a liquid or soft food diet in the weeks after surgery, but will gradually move onto a normal balanced diet that you need to stay on for life

  • exercise regularly – once you've recovered from surgery, you'll be advised to start an exercise plan and continue it for life

  • attend regular follow-up appointments to check how things are going after surgery and get advice or support if you need it

Women who have weight loss surgery will also usually need to avoid becoming pregnant during the first 12 to 18 months after surgery.

Risks of weight loss surgery

Weight loss surgery carries a small risk of complications.

These include:

  • being left with excess folds of skin – you may need further surgery to remove these.

  • not getting enough vitamins and minerals from your diet – you'll probably need to take supplements for the rest of your life after surgery.

  • gallstones (small, hard stones that form in the gallbladder)

  • a blood clot in the leg (deep vein thrombosis) or lungs (pulmonary embolism)

  • the gastric band slipping out of place, food leaking from the join between the stomach and small intestine, or the gut becoming blocked or narrowed

Before having surgery, speak to your surgeon about the possible benefits and risks of the procedure.

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