Now, I never knew that. I drink gallons of tea every day, but I never drink Coke and rarely drink coffee - and I probably eat more than I should. I never realized that caffeine affects the potassium levels.
Rarely a summer month goes by that I don't hear of someone I know fainting from having low potassium, and I thought it was just dietary. But I'm sure you're right, as most people around here have high caffeine intake.
Ella, you really do need to be careful drinking that much tea. I drink decaf hot tea and cold tea only and no soda (just because I don't like it).
And if you find it difficult cutting back or switching to decaf, eat a banana or two a day to increase your potassium level. This can be a very serious problem and thankfully our doctor knew that people moving from the north to the south didn't understand how the southern heat increased these potential problems and lectured us :-)