Same here. I went overboard though. I was making two quarts of iced tea at work. Very strong. I read that drinking diet Pepsi would give me kidney stones. After a year of drinking the tea I got a kidney stone. Ten cm long and 6 cm in diameter in my ureter. Two operations later I went back to diet Pepsi after I found out tea is high in oxalates. So is baby spinach. Two of my favorite things to have at work. Sigh.
I still drink tea - never coffee. Only one cup a day now.
get a ruler out and think about what you just posted about the size of your kidney stone,
Are you sure it was cm and not mm?? ;-)
Yes, you have to watch out for oxalates - especially if you are consuming a lot of calcium.