A: The LAP-BAND® System limits food intake. If you feel nauseated or sick on a regular basis, it may mean that you are not chewing your food well enough or that you are not following the diet rules properly. However, it could also mean that there is a problem with the placement of the band, so contact your doctor if this problem persists. Vomiting should be avoided as much as possible as it can cause the small stomach pouch to stretch. It can also lead to slippage of part of the stomach through the band and reduce the success of the operation. In some cases, it can require another operation.