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Dietary Oxalate Reduction Stones — ESENeph MCQ

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EasyRenal Stone DiseaseDietary Oxalate Reduction StonesESENeph

A 50-year-old man with CKD G3b and previous calcium oxalate stones has a 24-hour urine showing elevated oxalate. He eats a diet high in spinach, nuts, and chocolate. He also takes Vitamin C 1 g daily. What dietary advice reduces oxalate load?

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Correct answer: D — Reduce high-oxalate foods (spinach

High urinary oxalate is addressed by reducing dietary oxalate (spinach, rhubarb, beetroot, nuts, chocolate, tea) and stopping Vitamin C supplements (metabolised to oxalate). Crucially, dietary calcium should NOT be restricted – normal calcium intake (1000-1200 mg/day from food, not supplements) binds oxalate in the gut and reduces urinary oxalate absorption. Low calcium diets paradoxically increase stone risk. High fluid intake is always recommended in addition.

Reference: https://guidelines.ukkidney.org