What daily fluid intake is recommended to reduce the risk of stone formation?

• A. Drink more fluids (2+ L/day) to dilute urine
• B. Drink less than 1 liter per day
• C. Only herbal tea
• D. Avoid water entirely

Answer: (A)

Increasing daily fluid intake raises urine volume, which dilutes stone-forming substances in the urine and lowers their concentration. This reduces the likelihood of crystal formation and stone development. The practical takeaway is aiming for about 2 liters or more of fluids each day, with water as the primary source, to keep urine sufficiently dilute.

Drinking less than 1 liter a day concentrates the urine and raises stone risk. Relying on only herbal tea doesn't reliably achieve the necessary total volume or dilution. Avoiding water entirely eliminates the primary way to dilute urine and is not protective against stones.