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Can bariatric (weight-loss) surgery fail?

Bariatric surgery can fail. About 1 in 5 to 1 in 3 people will remain obese after having weight loss surgery.
 
A 2006 study found that up to a third of people who had gastric bypass surgery didn't lose adequate weight after their operation. This means their body mass index (BMI) may have gone down from 50, but it never dropped below 35 or even 30. 
 
It's not totally clear why this happens. There are many factors associated with it. It's important to know that the surgery doesn't always work. Even if it does, you can gain the weight back.
 
 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.