Eating disorders are serious mental health conditions that are characterized by a disturbance in a person’s eating habits. The most common conditions include anorexia nervosa, bulimia nervosa and binge-eating disorder, and these are often accompanied by an obsession with food, body weight and body shape. Symptoms will vary and can start gradually; they may include extremely restricted eating, emaciation, fear of gaining weight, distorted body image, an inflamed and sore throat (from vomiting), worn tooth enamel, gastrointestinal problems, eating alone, eating a large amount of food in a short amount of time (binging), and feeling ashamed or guilty about eating. It is important to catch these disorders early to avoid permanent, long-term damages to a person's body. Treatments may include psychotherapy, medical monitoring and hospitalization, nutritional counseling and medication.