When very overweight people have weight-loss surgery, many of them stop needing diabetes medicine within months—even before they lose a lot of weight—because their body starts using insulin better and their gut sends out helpful signals. About a third to almost half still stay diabetes-free five years later.

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Evidence from Studies

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Reversing Type 2 Diabetes: A Narrative Review of the Evidence

Narrative Review

Human

2019 Apr 1

This study says bariatric surgery can help reverse type 2 diabetes, which matches what the claim says — even if it doesn’t give the exact numbers, it still backs up the idea that the surgery works.

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Source Study

Reversing Type 2 Diabetes: A Narrative Review of the Evidence

Score: 1

DOI: 10.3390/nu11040766

Similar Assertions

If someone is severely overweight and diets and exercise haven’t worked, surgery to shrink the stomach can be a next step to help them lose weight and feel better.

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If an obese person with type 2 diabetes eats only 600–850 calories a day for a few months, about half of them will no longer have diabetes after a year—and about a third will still be diabetes-free two years later, especially if they lost a lot of weight early on and haven’t had diabetes for very long.

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