Research
Adherence
Bariatric patients should maintain a fluid intake of approximately 2.5 L/day to achieve a urinary volume of 2.5 L/day, mitigating the risk of stone formation caused by low urinary volume.
Drink 2.5 liters of water daily to prevent kidney stones. If your stomach is small, drink water between meals, not with them. Aim for 30 minutes before or 1 hour after eating. Avoid sugary drinks.
GoodSupportsHIGH confidence
BS patients should be recommended to have a fluid intake of around 2.5 L/day... aimed to achieve a urinary volume of approximately 2.5 L/day or 30 mL/Kg/day
Why this rating
Based on established clinical guidelines and observations in bariatric patients.
Source
Dietary Recommendations for Bariatric Patients to Prevent Kidney Stone Formation
Milene Subtil Ormanji et al. · Nutrients · 2020
DOI 10.3390/nu12051442
narrative_reviewCited 39×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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- Bariatric surgery, particularly malabsorptive procedures, significantly increases the risk of nephrolithiasis (kidney stones) due to enteric hyperoxaluria, low urinary volume, and hypocitraturia.Good
- Post-bariatric patients should restrict high-oxalate foods and maintain adequate calcium intake (1200-1500 mg/day) to bind intestinal oxalate and prevent enteric hyperoxaluria.Good
- Bariatric patients should take calcium citrate supplements (1200-1500 mg/day) and Vitamin D (3000 IU/day) to ensure adequate absorption and prevent bone disease and kidney stones.Good
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