Washington: Drinking iced tea can contribute to painful kidney stones, a Loyola University Medical Center urologist has warned.Iced tea contains high concentrations of oxalate, one of the key chemicals that lead to the formation of kidney stones, a common disorder of the urinary tract.“For people who have a tendency to form the most common type of kidney stones, iced tea is one of the worst things to drink,” said Dr. John Milner, assistant professor, Department of Urology, Loyola University Chicago Stritch School of Medicine.The most common cause of kidney stones is not drinking enough fluids. And during the summer, people can become dehydrated from sweating. Dehydration, combined with increased iced tea consumption, raises the risk of kidney stones, especially in people already at risk.“People are told that in the summertime they should drink more fluids. A lot of people choose to drink more iced tea, because it is low in calories and tastes better than water. However, in terms of kidney stones, they might be doing themselves a disservice,” Milner said.
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