Redbull and any alcohol, in moderation, isn't all that bad for you. Have more than a few, and you could run the risk of heart failure, IE having your heart stop on you. Red Bull is a stimulant, alcohol is a depressant. Between the two of them, your body doesn't know what to do and just quits on you. And yes, there have been studies on it.
Again, moderation is key. a few won't kill you, but a couple dozen might. I drink redbull mixed drinks almost exclusively now, and I've never had a problem, other than the time I stayed up for 48 hours straight and slept in some SFU parking lot.
TMC WUUUUUUUUUUUUUT
WE KILL YOU
SKIER: How would you describe your style?
PJ Cliche: Total skate influence. Even doh dis is on concrete, an you are face sideways, an it has sweet fuck all to do with ski, skate 'as play a huge role wit my steeze.