This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Anatomy
[{'content': 'All the following are causes of iron deficiency anemia except \nSelect and explain. \nA. Chronic renal failure, B. Celiac sprue, C. Hookworms, D. Carcinoma colon', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ref Harrison 19 th ed pg 627 Table: 126-2 Causes of Iron Deficiency Increased Demand for Iron Rapid growth in infancy or adolescence 2.Pregnan 3.Erythropoietin therapy 4.Increased Iron Loss Chronic blood loss 1.Menses Acute blood loss 1.Blood donation 2.2.Phleboto as treatment for polycythemia vera Decreased Iron Intake or Absorption 1.1.Inadequa diet 2.Malabsorption from disease (sprue, Crohn's disease) 3.Malabsorption from surgery (gastrectomy and some forms of bariatric surgery) Acute or chronic inflammation", 'role': 'assistant'}]