Saturday, October 24, 2015

Be careful how much ice tea you drink



I hesitated to put this article on my food blog but since it relates to a very popular summer drink I decided to publish it. 
 
An article in the April 2, 2015 issue of The New England Journal of Medicine entitled "A Case of Iced-Tea Nephropathy" details the case of a man in Arkansas who suffer kidney damage. Doctors determined after ruling out all other possible causes that it was ice tea that had caused the renal failure. 

The man who has not been identified admitted to drinking 16 8 ounce glasses of iced tea a day. Black tea contains oxalate. A biopsy showed oxalate crystals, interstitial inflammation with eosinophils, and interstitial edema consistent with a diagnosis of oxalate nephropathy according to Dr. Umbar Ghaffar of the University of Arkansas for Medical Sciences in Little Rock. 

His kidneys were excreting 99 mgs of oxalate with the normal being anywhere from 3-44mgs. Oxalate is also present in spinach, rhubarb and peanuts.

While no one is suggesting that we stop drinking iced tea, moderation in all things is the lesson to be learned from this article.

To read the article go to the New England Journal of Medicine online.

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