Introduction to Weight Loss Surgery

When is Surgery Appropriate to Consider?

Current guidelines for bariatric (weight loss) surgery state:

Bariatric surgery is recommended as a treatment option for people with obesity if all of the following criteria are fulfilled:

  • you have a BMI of 40 kg/m2 or more, or between 35 kg/m2 and 40 kg/m2 and other significant disease that could be improved if you lost weight
  • all appropriate non-surgical measures have been tried but have failed to achieve or maintain adequate, clinically beneficial weight loss for at least 6 months
  • you are willing to attend a specialist clinic for advice and management
  • you are generally fit for anaesthesia and surgery
  • you can commit to the need for long-term follow-up and understand the need for your commitment to a healthy eating pattern and exercise programme.

In addition to the criteria listed above, bariatric surgery is also recommended as a first-line option (instead of lifestyle interventions or drug treatment) for adults with a BMI of more than 50 kg/m2 in whom surgical intervention is considered appropriate.

In people for whom surgery is recommended as a first-line option, the medications orlistat or sibutramine can be used to maintain or reduce weight before surgery.

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