Bulimia Nervosa is a psychological and severe life-threatening eating disorder described by the ingestion of an abnormally large amount of food in short time period, followed by an attempt to avoid gaining weight by purging what was consumed. Here's how it can affect your body: Constant weight fluctuations, electrolyte imbalances, broken blood vessels within the eyes, enlarged glands in the neck and under the jawline, oral trauma, such as lacerations in the lining of the mouth or throat from repetitive vomiting, chronic dehydration, inflammation of the oesophagus, chronic gastric reflux after eating or peptic ulcers, infertility.