my sister had a band slip. They pulled it up . It happened because of throwing up so much. It was her gullbalder. They removed it. Her band it opened, not filled for months. At first she gained some. But as we all should watch what we eat she is loosing again. She was the first band they had slipped. I'm banded also loosing slowly but thats ok. Remember it's in our heads also to watch what we eat.