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': "Which of the following condition is not associated with osteoporosis? \nSelect and explain. \nA. Immobilization, B. Thyrotoxicosis, C. Turner's syndrome, D. Hypoparathyroidism", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Osteoporosis is associated with hyperparathyroidism. In hyperparathyroidism, excess parathyroid hormone in the blood stimulates extraction of calcium from bone to blood stream resulting in osteoporosis.', 'role': 'assistant'}]