The Wrong Way - Forced Vomiting
Some teens think that barfing out what they eat will prevent weight gain, but this is one of the worst ways to try and lose weight. Repeated vomiting will cause dehydration and swelling in the salivary glands. As well, stomach acid will damage your esophagus (the tube from the mouth to the stomach) and cause tooth decay. Forced vomiting is also the first sign of the eating disorder called bulimia.