Health Topics A-Z

How Can I Prevent Them?

You can do many things, mainly dietary, to prevent a recurrence of stones. But always check with your doctor first; the stone's composition will determine which preventive steps you should take.

Drink at least three quarts of liquid every day, more in hot weather. Drinking plenty of water is probably the most important way to prevent future stone formation.

Avoid or eat sparingly foods containing oxalate (chocolate, celery, grapes, bell peppers, rhubarb, beans, strawberries, spinach, asparagus, beets, black tea and vitamin C supplements).

Take daily supplements of vitamin B-6 (10 mg) and magnesium (300 mg), both of which reduce the formation of oxalates.

Avoid foods that raise uric acid levels: anchovies, sardines, organ meats, brewer's yeast. Reduce uric acid by eating a low-protein diet.

Avoid antacids; they are often high in calcium. Take calcium supplements with food, or better yet, get your calcium from food sources like dairy products.

Reduce salt to no more than 3 grams per day; higher amounts may raise the level of calcium oxalate in your urine.

Avoid vitamin D supplements, which can increase calcium levels.

Drink a glass of lemonade each day.