The basic idea of lap-band surgery involves an adjustable belt placed around parts of a patient’s stomach. This silicone belt essentially makes the stomach much smaller than normal. A smaller stomach makes it much more difficult to overeat. But it also makes it so food that a lap-band patient eats takes a long time to reach their stomach. This is essential to mention, because it means that the signals your stomach sends to your brain saying it’s had enough food can be sent when you eat much less than you did before getting lap-band surgery.