I have always drank soda. Mainly Pepsi (regular). The past week to week and a half I have noticed that after drinking soda I get sick. Well, I actually figured it out TODAY that my sickness was occuring after my soda intake. I become extremely nauseated, can't even eat or smell food, and become very weak with a headache. These are the usual symptoms, but at some times they are worse than others. Can someone please give me some insight as to what is causing this to happen to me? I doubt it's diabetes, I am 25, I am not overweight and have never had any problems before or at any other time other than when I drink a soda. Thank you!