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: Medicine
[{'content': 'A patient is known to have calcium nephrocalcinosis for the post 10 years. All of the following dietary recommendations should be suggested, Except: \nSelect and explain. \nA. Protein Restriction, B. Calcium Restriction, C. Calcium Restriction, D. All of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Answer is B (Calcium Restriction): Low protein, Low sodium and Normal Calcium diet is recommended for patients with calcium nephrolithiasis Dietry Intervention in patients with Calcium Nephrolithiasis Dietary intervention plays a cardinal role in the preventive treatment of calcium nephrolithiasis. Studies have shown that a low protein, low salt diet significantly reduces nephrolithiasis recurrence rates in patients with idiopathic hypercalciuria. Long term dietary compliance with a low protein, low salt diet has been shown to be superior to a low calcium diet in prevention of nephrolithiasis. A low calcium diet may increase the intestinal absorption of oxalate reducing the effectiveness of this therapy. Therefore low calcium diets are not recommended. Diets containing 700 to 800 mg of calcium are adequate for patients with idiopathic hypercalciuria. Low protein diets reduce purine intake, resulting in reduced systemic acid and uric acid loads. Low sodium diets reduce the amount of calcium in urine' - The Washington Manual Nephrology Subspecialty Consult' 2nd/245", 'role': 'assistant'}]