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← Human Body & HealthWhy does persistent kidney disease increase fracture risk involving mineral metabolism?
A)Reduced phosphate triggers calcification
B)Uremia upregulates collagen synthesis
C)Reduced vitamin D decreases calcium absorption✓
D)Excess EPO stimulates bone formation
💡 Explanation
Chronic kidney disease impairs the kidney's ability to activate vitamin D, leading to reduced calcium absorption in the intestines via the vitamin D receptor; therefore, osteomalacia and increased fracture risk result because of secondary hyperparathyroidism, rather than calcification or collagen synthesis changes.
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