Iced tea causes kidney stones – but hot tea is fine
Iced tea – everyone’s favourite summer drink – causes kidney stones. The tea is rich in oxalates, a key chemical that helps the formation of the stones, a common problem in the urinary tract that affects around 10 per cent of the population.
People who have a tendency to form kidney stones should stop drinking iced tea straight away, urge researchers from the Loyola University Chicago Stritch School of Medicine, who made the discovery.
Although kidney stones are usually formed because you’re not drinking enough fluids, iced tea is the one drink you must forego. Instead, drink water or lemonade.
Strangely, hot tea doesn’t have the same effect, even though it is equally rich in oxalates. Apparently, we don’t drink enough hot tea to cause the problem.
(Source: Loyola University Medical Centre, August 2nd, 2012).