In this study, researchers found that some version of orange drink diet soda flavors are popular as 7UP, Sunkist and Sprite contain relatively high amount of citrate.
Citrate can inhibit the formation of calcium oxalate stones are the most common cause of kidney stones.
The findings reported in the Journal of Urology shows that a diet soda with a high citrate can be used for people who are prone to kidney stones.
Kidney stones occur when the urine contains more crystal pembetuk substances such as calcium, uric acid and a substance called oxalate compared with other content that can be diluted. Most kidney stones caused by calcium and usually in combination with oxalate.
"One of the causes of people affected by kidney stones is a relatively small content of citrate in the urine of his," said Dr. Brian H Eisner, a urologist at Massachusetts General Hospital in Boston, was quoted as saying by Reuters on Tuesday (18/05/2010).
So far, a common treatment to prevent kidney stones caused by calcium oxalate or other stone types such as uric acid stones is by taking supplements of potassium citrate.
But according to Dr. Eisner, how must this therapy can prevent kidney stone formation remains unclear, but some doctors have already suggested this to the patient. The purpose of this study was to see whether there are commercial drinks that contain citric similar to homemade lemonade.
Overall the study found an orange-based drinks including diet soda 7UP, Sunkist, Sprite, Fresca and Canada Dry ginger ale has a higher citrate levels than homemade lemonade. Other sodas do not contain lots of citrate.
Because there is no definite evidence of a high citric drinks help prevent kidney stone formation, currently researchers do not recommend someone on a diet orange soda flavor to prevent stone formation. But patients should be routinely advised to consume 2-3 liters of water or other fluids every day
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