Physical damage can be serious from bulimia. Some may be irreversible, in particular, the erosion of your teeth. The vomiting can cause enamel erosion of your adult teeth, setting them up for decay and gum disease. Your menstrual cycle may become irregular, caused by a disturbance in your hormone balance. This hormone imbalance if often characterized by a decreased level of estrogen, which will increase your rick for bone fractures, since estrogen is important for the health of your bones.
Gastrointestinal problems can occurs from the vomiting or the use of laxatives.
These GI problems may include abdominal cramps, constipation or diarrhea, and in extreme or long term cases, there can be ulceration of your windpipe, or even perforation, plus the possibility of stomach rupture. Your purging can cause dehydration and an imbalance in your electrolytes. Electrolytes are important control mechanisms in your heart rhythm and kidney function. It can cause a drop in blood pressure which will make you lightheaded, which may be why you are dizzy during practice. Most of these problems can be corrected once you return to a healthy eating regime.