Weight loss may curb kidney stone risk in obese patients

This study looks at whether losing weight with a special very low-calorie diet (Optifast) can lower oxalate levels in urine for obese adults who have had calcium oxalate kidney stones. Fourteen participants will eat a low-oxalate diet and provide urine samples before and after the weight loss program. The goal is to see if weight reduction reduces the body's own oxalate production and helps manage stone risk.