Doctors at Ghaffar found a 56-year-old man 's kidney problems stemmed from drinking too much iced tea . Black tea contains oxalate , a chemical known to produce kidney stones and sometimes lead to kidney failure . The unidentified man will likely spend the rest of his life in dialysis .
Doctors at the University of Arkansas for Medical Sciences found a 56-year-old man 's kidney problems stemmed from drinking too much iced tea . Black tea contains oxalate , a chemical known to produce kidney stones and sometimes lead to kidney failure . The unidentified man will likely spend the rest of his life in dialysis .