Iced Tea has Issues
“For people that have a tendency to form the most common type of kidney stones, iced tea is one of the worst things to drink,” reports Dr. John Milner, an assistant professor with the Department of Urology at Loyola University Chicago’s Stritch School of Medicine. While all black tea contains oxalate, dietitians note that people tend to imbibe more of it when it’s on ice than when it’s hot.