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Monday, May 20, 2013
This season, choose to give an untraditional toast ... to your kidneys, and do it by raising a glass of water. Urologists say the best way for an average person to prevent kidney stones is by staying well hydrated.
The more water you drink, the more diluted your urine becomes so harmful chemicals and salts such as calcium don’t have time to crystallize and are instead removed from the body via urination.
Kidneys are small, crescent-shaped organs that filter blood and remove waste products from the body via urine. Stones develop when crystals separate from the urine and build up inside the kidney. Left untreated, they can eventually cause blockages and prevent urine from passing.
In general, people should drink enough fluids, the majority of that being water, to produce about two liters of urine per day. One should increase water intake when doing activities that may cause sweating, such as exercising or working in hot areas, to avoid dehydration.
While doctors agree that certain foods may promote stone development, there is no one food that causes a person to get kidney stones. Proper hydration and a balanced diet are the only universal precautions physicians recommend.
People with a family history of stone disease are at an increased risk to develop kidney stones, and once you develop a stone, you are more likely to get them in the future. Chronic urinary tract infections can also make people more susceptible to developing stones.
Researchers are investigating whether specific dietary and lifestyle factors can increase a person's risk, but so far the evidence has been inconclusive. Some of the factors are:
There is no magic solution for preventing kidney stones, so the best advice is:
People who form stones regularly or have increased risk of stone formation may require 24-hour urine collection and blood tests to identify metabolic abnormalities. The results of this test can help in recommending dietary modifications and medical therapy to decrease the risk of stone formation, but may not always be conclusive.
This article originally appeared in UC Health Line (12/11/08), a service of the University of Cincinnati Academic Health Center Public Relations Department and was adapted for use on NetWellness with permission, 2007.
Last Reviewed: Dec 29, 2008
Krishnanath Gaitonde, MD
Assistant Professor of Clinical Urology
College of Medicine
University of Cincinnati