This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Eating Disorders, Subject name: Psychiatry
[{'content': 'Which of the following is not true about bulimia nervosa? \nSelect and explain. \nA. Invariable weight loss with endocrine disorder, B. Occurrence of both binge eating and inappropriate compensatory behaviors, C. Recurrent episodes of binge eating, D. Recurrent self - induced vomiting', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bulimia nervosa: Characterized by episodes of binge eating followed by inappropriate ways of stopping weight gain - Purging (self-induced vomiting Weight is normal but there is fear of gaining weight Hypokalemia and Hypochloremia alkalosis Endocrine disorders are seen in anorexia nervosa and not bulimia nervosa.', 'role': 'assistant'}]