When I was about 10, I got a kidney infection apparently from drinking too much soda.
I don't think that was what really caused it, I think they were just feeding my parents things they wanted to hear.
I say that because mom didn't even buy soda back then, and I rarely drank it, although for a period of time I would take my 5 dollar allowance and buy soda and drink it.
I'm even more convinced because I had been drinking on average a 2 liter a day (since I was 16-20 I did). Although I've been cutting down, and it's more like none or at the most half.
I like caffiene too much.