Chen explains that bulimia is an eating disorder in which patients show addictive or compulsive behavior concerning food. They often use binge eating to relieve stress, but subsequently regret their behavior and purge themselves of the food by inducing vomiting. To be diagnosed as bulimia, this behavior must occur at least twice a week and continue for three months or more.
陳冠宇進一步說明，暴食症和厭食同樣是飲食失調，患者有食物成癮現象，常藉由暴量大啖食物來紓解壓力，之後卻又很後悔而催吐，且每週至少兩次並持續 3 個月以上。