Gastrickery

Gastric.
Trickery.
Gastrickery.

Bypass surgery convinces stomachs that they don't need as much food.

Stomach.
Magic.
Stomagic.

Like pulling a rabbit out of a hat.

Or more like pulling a hunger out of the body.

Both, if the person used to eat a lot of rabbits.

Bunny.
Eaten.
Bunneaten.