This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Calculous cholecystitis is associated with all of the following except: March 2005 \nSelect and explain. \nA. Oral contraceptives, B. Oestrogen, C. Obesity, D. Diabetes', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: Diabetes Risk factors for calculous cholecystitis mirror those for cholelithiasis and include the following: Female sex Ceain ethnic groups Obesity or rapid weight loss Drugs (especially hormonal therapy in women) Pregnancy Increasing age', 'role': 'assistant'}]