Can your brain be trained to simulate the effects of gastric band surgery? Sinead Corcoran finds out.

The promise:

Just like real gastric band surgery, Virtual Gastric Band (VGB) hypnosis claims to help people lose weight by convincing them that their stomach is full, even if they've only eaten a tiny bit.

Hypnosis for weight loss surged in popularity after English pop star Lily Allen used it to slim down from size 12 to a size 8. Can it work on me, a size 12 regular person?

The history:

Virtual Gastric Band is a weight loss hypnosis programme created by

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The science:

The reality:

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The verdict: