At one point I was drinking at least 44oz of Mountain Dew a day, I think probably my 'record' was like 132oz. This was back in the days when my anorexia was really bad and basically I drank soda in a misguided attempt at trying not to pass out from low blood-sugar (I have no idea).  Anyway I ended up having to stop because it was making my anxiety attacks so bad I was having to go to the ER because I couldn't control my breathing or heartbeat. Also, when I started purging, I quickly realized purging Mountain Dew was incredibly unpleasant. I ended up kicking it and now I basically drink like 24oz of soda / lemonade a week, which isn't great but going from constantly carrying a giant soda to buying a bottle on my way to work is much different (Plus I kicked caffeine which was probably why my anxiety was so bad) In short: HOW CAN YOU DRINK 100oz+ PER DAY CONSTANTLY AND NOT DIE.