This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Parathyroid Gland, Subject name: Medicine
[{'content': 'Osteoporosis is caused by all, except? \nSelect and explain. \nA. Sarcoidosis, B. Old age, C. Hypoparathyroidism, D. Steroid therapy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In sarcoidosis the osteoporosis process is usually due to use of steroids. This means choice a and d is correct. Osteoporosis occurs more frequently with increasing age as bone tissue is lost progressively. In women, the loss of ovarian function at menopause (typically about age 50) precipitates rapid bone loss.', 'role': 'assistant'}]