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Human Body & Health

Why 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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