Unnatural

This is the conversation I overheard (eavesdropped) on in Kroger line between two college girls this morning:

Girl #1- "What are you getting for your cold?"
Girl # 2 (sipping on a Diet Coke)- "I'm trying this echinacea."
Girl #1- "Why don't you get some of that Tylenol Cold and Sinus? I used it for my cold and it worked good."
Girl #2- (still sipping the Diet Coke full of aspartame) "No way, I'm taking this herb stuff. I really don't want any unnatural chemicals in my body."