Does adding sweetener or sugar to tea ruin tea's benefits?

United States
February 8, 2010 6:23am CST
Does adding sweetener or sugar to tea ruin tea's benefits? My mom said that recently, but I find I still like to add a little bit of sweetener, wether it be honey, agave, truvia, or sugar. I have also tried drinking tea without sweetener, and it's not so bad in taste. So how do you take your tea? With or without sweetener?