Bulimic patients are also afraid of gaining weight, but unlike people with anorexia, they often realize that their behavior is abnormal and may become depressed after eating a fatty meal. The health consequences can be severe, including fatigue, laxity, constipation, swellings, swollen salivary glands, eroded tooth enamel or sore throat due to vomiting. Overuse of laxatives can also cause serious loss of fluids and minerals.